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Elmounedi N, Bahloul W, Keskes H. Current Therapeutic Strategies of Intervertebral Disc Regenerative Medicine. Mol Diagn Ther 2024:10.1007/s40291-024-00729-7. [PMID: 39158834 DOI: 10.1007/s40291-024-00729-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2024] [Indexed: 08/20/2024]
Abstract
Intervertebral disc degeneration (IDD) is one of the most frequent causes of low back pain. No treatment is currently available to delay the progression of IDD. Conservative treatment or surgical interventions is only used to target the symptoms of IDD rather than treat the underlying cause. Currently, numerous potential therapeutic strategies are available, including molecular therapy, gene therapy, and cell therapy. However, the hostile environment of degenerated discs is a major problem that has hindered the clinical applicability of such approaches. In this regard, the design of drugs using alternative delivery systems (macro-, micro-, and nano-sized particles) may resolve this problem. These can protect and deliver biomolecules along with helping to improve the therapeutic effect of drugs via concentrating, protecting, and prolonging their presence in the degenerated disc. This review summarizes the research progress of diagnosis and the current options for treating IDD.
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Affiliation(s)
- Najah Elmounedi
- Cell Therapy and Experimental Surgery of Musculoskeletal System LR18SP11 Lab, Sfax Faculty of Medicine, Majida Boulila Road, 3029, Sfax, Tunisia.
| | - Walid Bahloul
- Cell Therapy and Experimental Surgery of Musculoskeletal System LR18SP11 Lab, Sfax Faculty of Medicine, Majida Boulila Road, 3029, Sfax, Tunisia
- Department of Orthopedics and Traumatology, CHU Habib Bourguiba, Sfax, Tunisia
| | - Hassib Keskes
- Cell Therapy and Experimental Surgery of Musculoskeletal System LR18SP11 Lab, Sfax Faculty of Medicine, Majida Boulila Road, 3029, Sfax, Tunisia
- Department of Orthopedics and Traumatology, CHU Habib Bourguiba, Sfax, Tunisia
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2
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Kim H, Yeo C, Hong JY, Jeon WJ, Kim H, Lee J, Lee YJ, Baek SH, Ha IH. Raphanus sativus Linne Protects Human Nucleus Pulposus Cells against H 2O 2-Induced Damage by Inhibiting TREM2. BIOLOGY 2024; 13:602. [PMID: 39194540 DOI: 10.3390/biology13080602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 08/06/2024] [Accepted: 08/08/2024] [Indexed: 08/29/2024]
Abstract
Intervertebral disc degeneration (IDD) progresses owing to damage and depletion of nucleus pulposus (NP) cells. Cytoprotection mitigates oxidative stress, nutrient deprivation, and mechanical stress, which lead to cell damage and necrosis. We aimed to examine the protective effect of Raphanus sativus Linne (RSL), common radish, against oxidative stress by H2O2 in human NP cells and whether the RSL extracts can inhibit triggering receptor expressed on myeloid cells 2 (TREM2), an inducer of apoptosis and degeneration in NP cells. We administered hydrogen peroxide (H2O2) to cultured human NP cells treated with RSL extracts. We used immunoblotting and quantitative PCR to investigate expression of the apoptosis-associated proteins in cultured cells. RSL significantly enhanced cell survival by suppressing the activation of cleaved caspase-3 and Bax. In contrast, RSL extract increased Bcl2 concentration to downregulate apoptosis. Additionally, RSL treatment notably enhanced the mRNA levels of ACAN and Col2a1 while significantly reducing those of ADAMTS-4, ADAMTS-5, MMP3, and MMP13, key genes involved in NP degeneration. While H2O2 elevated TREM2 expression, causing disc degeneration, RSL downregulated TREM2 expression. Thus, our findings imply that RSL supports human NP cells under oxidative stress and regulates the pathways underlying disc degeneration, particularly TREM2, and that RSL extracts may potentially prevent IDD.
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Affiliation(s)
- Hyunseong Kim
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, Seoul 06110, Republic of Korea
| | - Changhwan Yeo
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, Seoul 06110, Republic of Korea
| | - Jin Young Hong
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, Seoul 06110, Republic of Korea
| | - Wan-Jin Jeon
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, Seoul 06110, Republic of Korea
| | - Hyun Kim
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, Seoul 06110, Republic of Korea
| | - Junseon Lee
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, Seoul 06110, Republic of Korea
| | - Yoon Jae Lee
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, Seoul 06110, Republic of Korea
| | - Seung Ho Baek
- College of Korean Medicine, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyang-si 10326, Republic of Korea
| | - In-Hyuk Ha
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, Seoul 06110, Republic of Korea
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Jiang J, Huang Y, He B. Advances in the interaction between lumbar intervertebral disc degeneration and fat infiltration of paraspinal muscles: critical summarization, classification, and perspectives. Front Endocrinol (Lausanne) 2024; 15:1353087. [PMID: 38978618 PMCID: PMC11228240 DOI: 10.3389/fendo.2024.1353087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 06/10/2024] [Indexed: 07/10/2024] Open
Abstract
More than 619 million people in the world suffer from low back pain (LBP). As two potential inducers of LBP, intervertebral disc degeneration (IVDD) and fat infiltration of paraspinal muscles (PSMs) have attracted extensive attention in recent years. So far, only one review has been presented to summarize their relationship and relevant mechanisms. Nevertheless, it has several noticeable drawbacks, such as incomplete categorization and discussion, lack of practical proposals, etc. Consequently, this paper aims to systematically summarize and classify the interaction between IVDD and fat infiltration of PSMs, thus providing a one-stop search handbook for future studies. As a result, four mechanisms of IVDD leading to fat infiltration of PSMs and three mechanisms of fat infiltration in PSMs causing IVDD are thoroughly analyzed and summarized. The typical reseaches are tabulated and evaluated from four aspects, i.e., methods, conclusions, benefits, and drawbacks. We find that IVDD and fat infiltration of PSMs is a vicious cycle that can promote the occurrence and development of each other, ultimately leading to LBP and disability. Finally, eight perspectives are proposed for future in-depth research.
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Affiliation(s)
- Jiaqiu Jiang
- Department of Medical Imaging, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yilong Huang
- Department of Medical Imaging, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Bo He
- Department of Medical Imaging, The First Affiliated Hospital of Kunming Medical University, Kunming, China
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Lei Y, Zhan E, Chen C, Hu Y, Lv Z, He Q, Wang X, Li X, Zhang F. ALKBH5-mediated m 6A demethylation of Runx2 mRNA promotes extracellular matrix degradation and intervertebral disc degeneration. Cell Biosci 2024; 14:79. [PMID: 38877576 PMCID: PMC11179301 DOI: 10.1186/s13578-024-01264-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 06/06/2024] [Indexed: 06/16/2024] Open
Abstract
BACKGROUND N6-methyladenosine (m6A) methylation is a prevalent RNA modification implicated in various diseases. However, its role in intervertebral disc degeneration (IDD), a common cause of low back pain, remains unclear. RESULTS In this investigation, we explored the involvement of m6A demethylation in the pathogenesis of IDD. Our findings revealed that ALKBH5 (alkylated DNA repair protein AlkB homolog 5), an m6A demethylase, exhibited upregulation in degenerative discs upon mild inflammatory stimulation. ALKBH5 facilitated m6A demethylation within the three prime untranslated region (3'-UTR) of Runx2 mRNA, consequently enhancing its mRNA stability in a YTHDF1 (YTH N6-methyladenosine RNA binding protein F1)-dependent manner. The subsequent elevation in Runx2 expression instigated the upregulation of ADAMTSs and MMPs, pivotal proteases implicated in extracellular matrix (ECM) degradation and IDD progression. In murine models, subcutaneous administration of recombinant Runx2 protein proximal to the lumbar disc in mice elicited complete degradation of intervertebral discs (IVDs). Injection of recombinant MMP1a and ADAMTS10 proteins individually induced mild to moderate degeneration of the IVDs, while co-administration of MMP1a and ADAMTS10 resulted in moderate to severe degeneration. Notably, concurrent injection of the Runx2 inhibitor CADD522 with recombinant Runx2 protein did not result in IVD degeneration in mice. Furthermore, genetic knockout of ALKBH5 and overexpression of YTHDF1 in mice, along with lipopolysaccharide (LPS) treatment to induce inflammation, did not alter the expression of Runx2, MMPs, and ADAMTSs, and no degeneration of the IVDs was observed. CONCLUSION Our study elucidates the role of ALKBH5-mediated m6A demethylation of Runx2 mRNA in activating MMPs and ADAMTSs, thereby facilitating ECM degradation and promoting the occurrence of IDD. Our findings suggest that targeting the ALKBH5/Runx2/MMPs/ADAMTSs axis may represent a promising therapeutic strategy for preventing IDD.
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Affiliation(s)
- Yu Lei
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, 295 Xichang Rd, Wuhua District, Kunming, Yunnan, 650032, China
| | - Enyu Zhan
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, 295 Xichang Rd, Wuhua District, Kunming, Yunnan, 650032, China
| | - Chao Chen
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, 295 Xichang Rd, Wuhua District, Kunming, Yunnan, 650032, China
| | - Yaoquan Hu
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, 295 Xichang Rd, Wuhua District, Kunming, Yunnan, 650032, China
| | - Zhengpin Lv
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, 295 Xichang Rd, Wuhua District, Kunming, Yunnan, 650032, China
| | - Qicong He
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, 295 Xichang Rd, Wuhua District, Kunming, Yunnan, 650032, China
| | - Xuenan Wang
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, 295 Xichang Rd, Wuhua District, Kunming, Yunnan, 650032, China
| | - Xingguo Li
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, 295 Xichang Rd, Wuhua District, Kunming, Yunnan, 650032, China
| | - Fan Zhang
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, 295 Xichang Rd, Wuhua District, Kunming, Yunnan, 650032, China.
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Zhang H, Song Y, Yang Y, Gao Z, Song Z, Wang W. LncRNA FGD5-AS1 promote extracellular matrix synthesis of nucleus pulposus cell via miR-486-5p/FOXO1. Minerva Med 2024; 115:408-411. [PMID: 37310708 DOI: 10.23736/s0026-4806.23.08690-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Hui Zhang
- The First School of Clinical Medicine, The First Hospital of Lanzhou University, Lanzhou University, Lanzhou, China
- Gansu Provincial Hospital, Lanzhou, China
| | - Yuxin Song
- Gansu Provincial Hospital, Lanzhou, China
| | - Yang Yang
- Gansu Provincial Hospital, Lanzhou, China
| | - Zhao Gao
- The First School of Clinical Medicine, The First Hospital of Lanzhou University, Lanzhou University, Lanzhou, China
| | - Zhengdong Song
- The First School of Clinical Medicine, The First Hospital of Lanzhou University, Lanzhou University, Lanzhou, China
| | - Wenji Wang
- The First School of Clinical Medicine, The First Hospital of Lanzhou University, Lanzhou University, Lanzhou, China -
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Li Z, Wu Y, Liu M, Miao D, Zhang D, Ding W. A novel quantitative method to evaluate lumbar disc degeneration: MRI histogram analysis. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2024; 33:2420-2429. [PMID: 38705902 DOI: 10.1007/s00586-024-08279-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 01/24/2024] [Accepted: 04/16/2024] [Indexed: 05/07/2024]
Abstract
PURPOSE This study aimed to use MRI histogram analysis to routine MRI sequences to evaluate lumbar disc degeneration (LDD), illustrate the correlation between this novel method and the traditional Pfirrmann classification method, and more importantly, perform comprehensive agreement analysis of MRI histogram analysis in various situations to evaluate its objectivity and stability. METHODS Lumbar MRI images from 133 subjects were included in this study. LDD was classified into grades by Pfirrmann classification and was measured as peak separation value by MRI histogram analysis. Correlation analysis between the two methods was performed and cutoff values were determined. In addition, the agreement analysis of peak separation value was performed by intraclass correlation coefficient (ICC) in four scenarios, including inter-resolution, inter-observer, inter-regions of interest (ROI) and inter-slice. RESULTS Peak separation values were strongly correlated with Pfirrmann grades (r = - 0.847). The inter-resolution agreements of peak separation value between original image resolution of 2304 × 2304 and compressed image resolutions (1152 × 1152, 576 × 576, 288 × 288) were good to excellent (ICCs were 0.916, 0.876 and 0.822), except 144 × 144 was moderate (ICC = 533). The agreements of inter-observer (ICC = 0.982) and inter-ROI (ICC = 0.915) were excellent. Compared with the mid-sagittal slice, the inter-slice agreements were good for the first adjacent slices (ICCs were 0.826 and 0.844), and moderate to good for the second adjacent slices (ICC = 0.733 and 0.753). CONCLUSION MRI histogram analysis, used in routine MRI sequences, demonstrated a strong correlation with Pfirrmann classification and good agreements in various scenarios, expanding the range of application and providing an effective, objective and quantitative tool to evaluate LDD.
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Affiliation(s)
- Zhaohui Li
- Department of Spine Surgery, Hebei Medical University Third Hospital, 139 Ziqiang Road, Shijiazhuang, 050051, China
| | - Yurui Wu
- School of Public Health, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, China
| | - Mengyang Liu
- School of Public Health, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, 050017, China
| | - Dazhuang Miao
- Department of Spine Surgery, Hebei Medical University Third Hospital, 139 Ziqiang Road, Shijiazhuang, 050051, China
| | - Di Zhang
- Department of Spine Surgery, Hebei Medical University Third Hospital, 139 Ziqiang Road, Shijiazhuang, 050051, China.
| | - Wenyuan Ding
- Department of Spine Surgery, Hebei Medical University Third Hospital, 139 Ziqiang Road, Shijiazhuang, 050051, China.
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Ma M, Zhang C, Zhong Z, Wang Y, He X, Zhu D, Qian Z, Yu B, Kang X. siRNA incorporated in slow-release injectable hydrogel continuously silences DDIT4 and regulates nucleus pulposus cell pyroptosis through the ROS/TXNIP/NLRP3 axis to alleviate intervertebral disc degeneration. Bone Joint Res 2024; 13:247-260. [PMID: 38771134 PMCID: PMC11107476 DOI: 10.1302/2046-3758.135.bjr-2023-0320.r1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/22/2024] Open
Abstract
Aims In this investigation, we administered oxidative stress to nucleus pulposus cells (NPCs), recognized DNA-damage-inducible transcript 4 (DDIT4) as a component in intervertebral disc degeneration (IVDD), and devised a hydrogel capable of conveying small interfering RNA (siRNA) to IVDD. Methods An in vitro model for oxidative stress-induced injury in NPCs was developed to elucidate the mechanisms underlying the upregulation of DDIT4 expression, activation of the reactive oxygen species (ROS)-thioredoxin-interacting protein (TXNIP)-NLRP3 signalling pathway, and nucleus pulposus pyroptosis. Furthermore, the mechanism of action of small interfering DDIT4 (siDDIT4) on NPCs in vitro was validated. A triplex hydrogel named siDDIT4@G5-P-HA was created by adsorbing siDDIT4 onto fifth-generation polyamidoamine (PAMAM) dendrimer using van der Waals interactions, and then coating it with hyaluronic acid (HA). In addition, we established a rat puncture IVDD model to decipher the hydrogel's mechanism in IVDD. Results A correlation between DDIT4 expression levels and disc degeneration was shown with human nucleus pulposus and needle-punctured rat disc specimens. We confirmed that DDIT4 was responsible for activating the ROS-TXNIP-NLRP3 axis during oxidative stress-induced pyroptosis in rat nucleus pulposus in vitro. Mitochondria were damaged during oxidative stress, and DDIT4 contributed to mitochondrial damage and ROS production. In addition, siDDIT4@G5-P-HA hydrogels showed good delivery activity of siDDIT4 to NPCs. In vitro studies illustrated the potential of the siDDIT4@G5-P-HA hydrogel for alleviating IVDD in rats. Conclusion DDIT4 is a key player in mediating pyroptosis and IVDD in NPCs through the ROS-TXNIP-NLRP3 axis. Additionally, siDDIT4@G5-P-HA hydrogel has been found to relieve IVDD in rats. Our research offers an innovative treatment option for IVDD.
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Affiliation(s)
- Miao Ma
- The Second Clinical Medical College, Lanzhou University, Lanzhou, China
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, China
| | - Chongjing Zhang
- Department of Sports Medicine, The Second Affiliated Hospital of Fujian Traditional Chinese Medical University, Fuzhou, China
| | - Zeyuan Zhong
- Department of Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yajun Wang
- Department of Oncology, Zhangye People’s Hospital Affiliated to Hexi University, Zhangye, China
| | - Xuegang He
- The Second Clinical Medical College, Lanzhou University, Lanzhou, China
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, China
| | - Daxue Zhu
- The Second Clinical Medical College, Lanzhou University, Lanzhou, China
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, China
| | - Zhi Qian
- Department of Joint and Sports Medicine, Institute of Orthopaedic Diseases, Zhangye People's Hospital Affiliated to Hexi University, Zhangye, China
| | - Baoqing Yu
- Shanghai Seventh People’s Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xuewen Kang
- The Second Clinical Medical College, Lanzhou University, Lanzhou, China
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, China
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Peng B, Li Q, Chen J, Wang Z. Research on the role and mechanism of IL-17 in intervertebral disc degeneration. Int Immunopharmacol 2024; 132:111992. [PMID: 38569428 DOI: 10.1016/j.intimp.2024.111992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/28/2024] [Accepted: 03/30/2024] [Indexed: 04/05/2024]
Abstract
Intervertebral disc degeneration (IDD) is one of the primary causes of low back pain (LBP), which seriously affects patients' quality of life. In recent years, interleukin (IL)-17 has been shown to be highly expressed in the intervertebral disc (IVD) tissues and serum of patients with IDD, and IL-17A has been shown to promote IDD through multiple pathways. We first searched databases such as PubMed, Cochrane, Embase, and Web of Science using the search terms "IL-17 or interleukin 17″ and "intervertebral discs". The search period ranged from the inception of the databases to December 2023. A total of 24 articles were selected after full-text screening. The main conclusion of the clinical studies was that IL-17A levels are significantly increased in the IVD tissues and serum of IDD patients. The results from the in vitro studies indicated that IL-17A can activate signaling pathways such as the NF-κB and MAPK pathways; promote inflammatory responses, extracellular matrix degradation, and angiogenesis; and inhibit autophagy in nucleus pulposus cells. The main finding of the in vivo experiments was that puncture of animal IVDs resulted in elevated levels of IL-17A within the IVD, thereby inducing IDD. Clinical studies, in vitro experiments, and in vivo experiments confirmed that IL-17A is closely related to IDD. Therefore, drugs that target IL-17A may be novel treatments for IDD, providing a new theoretical basis for IDD therapy.
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Affiliation(s)
- Bing Peng
- Liuyang Hospital of Traditional Chinese Medicine, Liuyang City, Hunan Province, China; Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Qian Li
- Liuyang Hospital of Traditional Chinese Medicine, Liuyang City, Hunan Province, China
| | - Jiangping Chen
- Liuyang Hospital of Traditional Chinese Medicine, Liuyang City, Hunan Province, China
| | - Zhexiang Wang
- Hunan Provincial Hospital of Integrative Traditional Chinese and Western Medicine, Changsha City, Hunan Province, China.
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Xia Q, Zhao Y, Dong H, Mao Q, Zhu L, Xia J, Weng Z, Liao W, Hu Z, Yi J, Feng S, Jiang Y, Xin Z. Progress in the study of molecular mechanisms of intervertebral disc degeneration. Biomed Pharmacother 2024; 174:116593. [PMID: 38626521 DOI: 10.1016/j.biopha.2024.116593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 04/01/2024] [Accepted: 04/10/2024] [Indexed: 04/18/2024] Open
Abstract
Degenerative intervertebral disc disease (IVDD) is one of the main spinal surgery, conditions, which markedly increases the incidence of low back pain and deteriorates the patient's quality of life, and it imposes significant social and economic burdens. The molecular pathology of IVDD is highly complex and multilateral however still not ompletely understood. New findings indicate that IVDD is closely associated with inflammation, oxidative stress, cell injury and extracellular matrix metabolismdysregulation. Symptomatic management is the main therapeutic approach adopted for IVDD, but it fails to address the basic pathological changes and the causes of the disease. However, research is still focusing on molecular aspects in terms of gene expression, growth factors and cell signaling pathways in an attempt to identify specific molecular targets for IVDD treatment. The paper summarizes the most recent achievements in molecularunderstanding of the pathogenesis of IVDD and gives evidence-based recommendations for clinical practice.
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Affiliation(s)
- Qiuqiu Xia
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Yan Zhao
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Huaize Dong
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Qiming Mao
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Lu Zhu
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Jiyue Xia
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Zijing Weng
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Wenbo Liao
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China
| | - Zongyue Hu
- Department of Pain Rehabilitation, Affiliated Sinopharm Gezhouba Central Hospital, Third Clinical Medical College of Three Gorges University, Yichang, Hubei Province 443003, China
| | - Jiangbi Yi
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Shuai Feng
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Youhong Jiang
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Zhijun Xin
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; Institut Curie, PSL Research University, CNRS UMR3244, Dynamics of Genetic Information, Sorbonne Université, Paris 75005, France.
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10
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Liu Y, Zhang G, Wu J, Meng Y, Hu J, Fu H, Yang D. CARMA3 Drives NF-κB Activation and Promotes Intervertebral Disc Degeneration: Involvement of CARMA3-BCL10-MALT1 Signalosome. Inflammation 2024:10.1007/s10753-024-02016-3. [PMID: 38607566 DOI: 10.1007/s10753-024-02016-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/27/2024] [Accepted: 03/30/2024] [Indexed: 04/13/2024]
Abstract
Intervertebral disc degeneration (IDD) diseases are common and frequent diseases in orthopedics. The caspase recruitment domain (CARD) and membrane-associated guanylate kinase-like protein 3 (CARMA3) is crucial in the activation of the NF-κB pathway. However, the biological function of CARMA3 in IDD remains unknown. Here, CARMA3 expression was elevated in nucleus pulposus (NP) tissues of IDD rats and nutrient deprivation (ND)-induced NP cells. The main pathological manifestations observed in IDD rats were shrinkage of the NP, reduction of NP cells, fibrosis of NP tissues, and massive reduction of proteoglycans. These changes were accompanied by a decrease in the expression of collagen II and aggrecan, an increase in the expression of the extracellular matrix (ECM) catabolic proteases MMP-3, MMP-13, and metalloprotease with ADAMTS-5, and an increase in the activity of the pro-apoptotic protease caspase-3. The expression of p-IκBαSer32/36 and p-p65Ser536 was also upregulated. However, these effects were reversed with the knockdown of CARMA3. Mechanistically, CARMA3 bound to BCL10 and MALT1 to form a signalosome. Knockdown of CARMA3 reduced the CARMA3-BCL10-MALT1 signalosome-mediated NF-κB activation. CARMA3 activated the NF-κB signaling pathway in a manner that bound to BCL10 and MALT1 to form a signalosome, which affects NP cell damage and is involved in the development of IDD. This supports CARMA3-BCL10-MALT1-NF-κB as a promising targeting axis for the treatment of IDD.
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Affiliation(s)
- Yadong Liu
- Department of Orthopedics, Central Hospital of Dalian University of Technology, No. 826 Xinan Road, Dalian, People's Republic of China
| | - Guiqi Zhang
- Department of Orthopedics, Central Hospital of Dalian University of Technology, No. 826 Xinan Road, Dalian, People's Republic of China
| | - Jiani Wu
- Department of Orthopedics, Central Hospital of Dalian University of Technology, No. 826 Xinan Road, Dalian, People's Republic of China
| | - Yi Meng
- Department of Orthopedics, Central Hospital of Dalian University of Technology, No. 826 Xinan Road, Dalian, People's Republic of China
| | - Jianyu Hu
- Department of Orthopedics, Central Hospital of Dalian University of Technology, No. 826 Xinan Road, Dalian, People's Republic of China
| | - Hao Fu
- Department of Orthopedics, Central Hospital of Dalian University of Technology, No. 826 Xinan Road, Dalian, People's Republic of China
| | - Dongfang Yang
- Department of Orthopedics, Central Hospital of Dalian University of Technology, No. 826 Xinan Road, Dalian, People's Republic of China.
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Elmounedi N, Bahloul W, Kharrat A, Horchani M, Ben Jannet H, Racem Guidara A, Keskes H. Ozone therapy (O 2-O 3) alleviates the progression of early intervertebral disc degeneration via the inhibition of oxidative stress and the interception of the PI3K/Akt/NF-κB signaling pathway. Int Immunopharmacol 2024; 129:111596. [PMID: 38301412 DOI: 10.1016/j.intimp.2024.111596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 02/03/2024]
Abstract
Intervertebral disc degeneration (IDD) stands for the most frequent cause of low back pain. Finding a cure for this disease is an important challenge as current conservative treatments and surgical interventions fail to bring a solution to this disease. Ozone therapy (O2-O3) has yielded outstanding outcomes in intervertebral disc pathology. The ozone's efficacy in the treatment of IDD remains unconfirmed. This study aimed to assess the effectiveness of intradiscal ozone injection on IDD induced in a rat. Effects of ozone therapy on the viability of nucleus pulposus cells were evaluated by CCK-8 assays. Macrophage immunoreactivity was detected by immunohistochemical, the expression of collagen type II was evaluated by western blot, and measurement of oxidative stress parameters was realized. Molecular docking studies were carried out in order to predict the interaction formed between O3 and the target enzymes, on the one hand, O3 with PI3K and, on the other hand, O3 with COX-2. IRM, X-ray, hematoxylin-eosin, and bleu alcian staining were realized to assess the therapeutic impacts of ozone in the puncture-induced rat model of IDD. In vivo, O3 ameliorated the IDD in the early stage of this disease. It was also displayed in molecular docking that O3 might bind to PI3K to suppress the PI3K/Akt/NF-κB signaling pathway. This study's results show that the O3 should be administered at the low grade of IDD and at an early stage because it cannot restore the advanced inflammatory alteration of the IVD. Our results corroborated also that O3 inhibits the progression of IDD via the PI3K/Akt/NF-κB signaling pathway, which supports O3 as an effective therapeutic option for treating IDD.
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Affiliation(s)
- Najah Elmounedi
- Cell Therapy and Experimental Surgery of Musculoskeletal System LR18SP11 Lab, Faculty of Medicine, Sfax, Tunisia.
| | - Walid Bahloul
- Cell Therapy and Experimental Surgery of Musculoskeletal System LR18SP11 Lab, Faculty of Medicine, Sfax, Tunisia; Department of Orthopedics and Traumatology, CHU Habib Bourguiba, Sfax, Tunisia
| | | | - Mabrouk Horchani
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11Es39), Medicinal Chemistry and Natural Products, Faculty of Science of Monastir, University of Monastir, Avenue of Environment, Monastir 5000, Tunisia
| | - Hichem Ben Jannet
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11Es39), Medicinal Chemistry and Natural Products, Faculty of Science of Monastir, University of Monastir, Avenue of Environment, Monastir 5000, Tunisia
| | - Ahmed Racem Guidara
- Cell Therapy and Experimental Surgery of Musculoskeletal System LR18SP11 Lab, Faculty of Medicine, Sfax, Tunisia; Department of Orthopedics and Traumatology, CHU Habib Bourguiba, Sfax, Tunisia
| | - Hassib Keskes
- Cell Therapy and Experimental Surgery of Musculoskeletal System LR18SP11 Lab, Faculty of Medicine, Sfax, Tunisia; Department of Orthopedics and Traumatology, CHU Habib Bourguiba, Sfax, Tunisia
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12
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Chen X, Cai D, Li H, Wei Q, Li X, Han Z, Liang J, Xie J, Ruan J, Liu J, Xiang Z, Dong W, Guo W. Exosomal U2AF2 derived from human bone marrow mesenchymal stem cells attenuates the intervertebral disc degeneration through circ_0036763/miR-583/ACAN axis. Regen Ther 2024; 25:344-354. [PMID: 38362337 PMCID: PMC10867602 DOI: 10.1016/j.reth.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 01/18/2024] [Accepted: 01/25/2024] [Indexed: 02/17/2024] Open
Abstract
Intervertebral disc degeneration (IDD) is one of the major leading causes of back pain affecting the patient's quality of life. However, the roles of circular RNA (circRNA) in IDD remains unclear. This study aimed to explore the function and underlying mechanism of circ_0036763 in IDD. In this study, expressions of circ_0036763, U2 small nuclear RNA auxiliary factor 2 (U2AF2), miR-583 and aggrecan (ACAN) in primary human nucleus pulposus cells (HNPCs) derived from IDD patients and healthy controls were detected by quantitative real-time reverse transcription-PCR (qRT-PCR) or Western blot (WB). The relationship between pre-circ_0036763 and U2AF2, circ_0036763 and miR-583, miR-583 and ACAN mRNA was determined by bioinformatic analysis, miRNA pull down or RNA immunoprecipitation (RIP) assay. The expressions of Collagen I and Collagen II were evaluated by WB. Co-culture of bone marrow mesenchymal stem cells (bMSCs) or bMSCs-derived exosomes and HNPCs were performed to identify the effect of U2AF2 on the mature of circ_0036763 and ACAN. Results indicated that circ_0036763, U2AF2 and ACAN were downregulated while miR-583 was upregulated in HNPCs derived from IDD patients compared with that in normal HNPCs. Besides, overexpression of circ_0036763 elevated the expressions of ACAN and Collagen II whereas reduced Collagen I expression in HNPCs. Moreover, U2AF2 promoted the mature of circ_0036763, and circ_0036763 positively regulated ACAN by directly sponging miR-583. Furthermore, exosomal U2AF2 derived from bMSCs could increase U2AF2 levels in HNPCs and subsequently regulate the expression of ACAN by circ_0036763/miR-583 axis. In summary, circ_0036763 modified by exosomal U2AF2 derived from bMSCs alleviated IDD through regulating miR-583/ACAN axis in HNPCs. Thus, this study might provide novel therapeutic targets for IDD.
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Affiliation(s)
- Xiaofeng Chen
- Department of Orthopedics, Panyu Hospital of Chinese Medicine, No.93 and 65 Qiaodong Road, Panyu District, Guangzhou 511400, China
| | - Dongling Cai
- Department of Orthopedics, Panyu Hospital of Chinese Medicine, No.93 and 65 Qiaodong Road, Panyu District, Guangzhou 511400, China
| | - Hao Li
- Department of Orthopedics, Panyu Hospital of Chinese Medicine, No.93 and 65 Qiaodong Road, Panyu District, Guangzhou 511400, China
| | - Qipeng Wei
- Department of Orthopedics, Panyu Hospital of Chinese Medicine, No.93 and 65 Qiaodong Road, Panyu District, Guangzhou 511400, China
| | - Xi Li
- Department of Dermatology, Panyu Hospital of Chinese Medicine, No.93 and 65 Qiaodong Road, Panyu District, Guangzhou 511400, China
- Guangzhou University of Chinese Medicine, No.12 Jichang Road, Baiyun Disitrct, Guangzhou 510405, China
| | - Zhuangxun Han
- Department of Orthopedics, Panyu Hospital of Chinese Medicine, No.93 and 65 Qiaodong Road, Panyu District, Guangzhou 511400, China
| | - Jinjun Liang
- Department of Orthopedics, Panyu Hospital of Chinese Medicine, No.93 and 65 Qiaodong Road, Panyu District, Guangzhou 511400, China
| | - Junxian Xie
- Department of Orthopedics, Panyu Hospital of Chinese Medicine, No.93 and 65 Qiaodong Road, Panyu District, Guangzhou 511400, China
| | - Jiajian Ruan
- Guangzhou University of Chinese Medicine, No.12 Jichang Road, Baiyun Disitrct, Guangzhou 510405, China
| | - Jincheng Liu
- Guangzhou University of Chinese Medicine, No.12 Jichang Road, Baiyun Disitrct, Guangzhou 510405, China
| | - Zhen Xiang
- Guangzhou University of Chinese Medicine, No.12 Jichang Road, Baiyun Disitrct, Guangzhou 510405, China
| | - Wenxuan Dong
- Guangzhou University of Chinese Medicine, No.12 Jichang Road, Baiyun Disitrct, Guangzhou 510405, China
| | - Weijun Guo
- Department of Orthopedics, Panyu Hospital of Chinese Medicine, No.93 and 65 Qiaodong Road, Panyu District, Guangzhou 511400, China
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13
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Xue P, Wang Y, Lv L, Wang D, Wang Y. Roles of Chemokines in Intervertebral Disk Degeneration. Curr Pain Headache Rep 2024; 28:95-108. [PMID: 37976014 DOI: 10.1007/s11916-023-01188-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2023] [Indexed: 11/19/2023]
Abstract
PURPOSE OF REVIEW Intervertebral disc degeneration is the primary etiology of low back pain and radicular pain. This review examines the roles of crucial chemokines in different stages of degenerative disc disease, along with interventions targeting chemokine function to mitigate disc degeneration. RECENT FINDINGS The release of chemokines from degenerated discs facilitates the infiltration and activation of immune cells, thereby intensifying the inflammatory cascade response. The migration of immune cells into the venous lumen is concomitant with the emergence of microvascular tissue and nerve fibers. Furthermore, the presence of neurogenic factors secreted by disc cells and immune cells stimulates the activation of pain-related cation channels in the dorsal root ganglion, potentially exacerbating discogenic and neurogenic pain and intensifying the degenerative cascade response mediated by chemokines. Gaining a deeper comprehension of the functions of chemokines and immune cells in these processes involving catabolism, angiogenesis, and injury detection could offer novel therapeutic avenues for managing symptomatic disc disease.
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Affiliation(s)
- Pengfei Xue
- Medical School of Southeast University, Nanjing, Jiangsu, 210009, China
- Central Laboratory, Gaochun Hospital Affiliated to Jiangsu University, Nanjing, Jiangsu, 211300, China
| | - Yi Wang
- Department of Orthopaedics, Jiujiang Traditional Chinese Medicine Hospital, Jiujiang, Jiangxi, 332000, China
| | - Long Lv
- Central Laboratory, Gaochun Hospital Affiliated to Jiangsu University, Nanjing, Jiangsu, 211300, China
| | - Dongming Wang
- Central Laboratory, Gaochun Hospital Affiliated to Jiangsu University, Nanjing, Jiangsu, 211300, China.
| | - Yuntao Wang
- Medical School of Southeast University, Nanjing, Jiangsu, 210009, China.
- Department of Spine Center, Zhongda Hospital, Southeast University, Nanjing, Jiangsu, 210009, China.
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14
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Sao K, Risbud MV. Proteoglycan Dysfunction: A Common Link Between Intervertebral Disc Degeneration and Skeletal Dysplasia. Neurospine 2024; 21:162-178. [PMID: 38569642 PMCID: PMC10992626 DOI: 10.14245/ns.2347342.671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/04/2024] [Accepted: 02/23/2024] [Indexed: 04/05/2024] Open
Abstract
Proteoglycans through their sulfated glycosaminoglycans regulate cell-matrix signaling during tissue development, regeneration, and degeneration processes. Large extracellular proteoglycans such as aggrecan, versican, and perlecan are especially important for the structural integrity of the intervertebral disc and cartilage during development. In these tissues, proteoglycans are responsible for hydration, joint flexibility, and the absorption of mechanical loads. Loss or reduction of these molecules can lead to disc degeneration and skeletal dysplasia, evident from loss of disc height or defects in skeletal development respectively. In this review, we discuss the common proteoglycans found in the disc and cartilage and elaborate on various murine models and skeletal dysplasias in humans to highlight how their absence and/or aberrant expression causes accelerated disc degeneration and developmental defects.
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Affiliation(s)
- Kimheak Sao
- Graduate Program in Cell Biology and Regenerative Medicine, Jefferson College of Life Sciences, Thomas Jefferson University, Philadelphia, PA, USA
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Makarand V. Risbud
- Graduate Program in Cell Biology and Regenerative Medicine, Jefferson College of Life Sciences, Thomas Jefferson University, Philadelphia, PA, USA
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
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15
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Tseng C, Chen B, Han Y, Wang K, Song Q, Shen H, Chen Z. Advanced glycation end products promote intervertebral disc degeneration by transactivation of matrix metallopeptidase genes. Osteoarthritis Cartilage 2024; 32:187-199. [PMID: 37717904 DOI: 10.1016/j.joca.2023.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 09/05/2023] [Accepted: 09/11/2023] [Indexed: 09/19/2023]
Abstract
OBJECTIVE Examine the mechanism by which advanced glycation end products (AGEs) induce intervertebral disc degeneration (IDD) in C57BL/6J mice. METHODS Matrix metallopeptidase (MMP) gene mRNA levels were assessed using RT-qPCR. Immunoprecipitation and co-immunoprecipitation were performed to identify the transcriptional complex regulating MMP expression due to AGEs. The preventive effects of inhibitors targeting this complex were tested in mice on high AGE diets. RESULTS IDD and AGE accumulation were evident in mice on high-AGE diets (HAGEs), persisting across dietary shifts but absent in mice exclusively on low-AGE diets. Molecularly, HAGEs activated p21-activated kinase 1 (PAK1), prompting peroxisome proliferator-activated receptor gamma coactivator-related protein 1 (PPRC1) phosphorylation. Ubiquitin-specific protease 12 (USP12) interacted with the phosphorylated PPRC1 (pPPRC1), safeguarding it from proteasomal degradation. This pPPRC1, in collaboration with two histone acetyltransferases p300/CREB-binding protein (CBP) and a transcription factor activator protein 1(AP1), enhanced the expression of 12 MMP genes (MMP1a/1b/3/7/9/10/12/13/16/19/23/28). In vitro AGE exposure on nucleus pulposus and annulus fibrosus cells replicated this gene activation pattern, driven by the PAK1/pPPRC1-p300/CBP-AP1 pathway. The application of PAK1, p300, and AP1 inhibitors reduced pPPRC1-p300/CBP-AP1 binding to MMP promoters, diminishing their expression. These inhibitors effectively thwarted IDD in HAGE mice. CONCLUSION Our results revealed that HAGEs instigate IDD via the PAK1/pPPRC1-p300/CBP-AP1 signaling pathway. This insight can guide therapeutic strategies to slow IDD progression in prediabetic/diabetic patients.
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Affiliation(s)
- Changchun Tseng
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bin Chen
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yingchao Han
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Kun Wang
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qingxin Song
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hongxing Shen
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhi Chen
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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16
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Wang X, Zeng Q, Ge Q, Hu S, Jin H, Wang PE, Li J. Protective effects of Shensuitongzhi formula on intervertebral disc degeneration via downregulation of NF-κB signaling pathway and inflammatory response. J Orthop Surg Res 2024; 19:80. [PMID: 38243334 PMCID: PMC10799454 DOI: 10.1186/s13018-023-04391-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/18/2023] [Indexed: 01/21/2024] Open
Abstract
Low back pain (LBP) is a common orthopedic disease over the world. Lumbar intervertebral disc degeneration (IDD) is regarded as an important cause of LBP. Shensuitongzhi formula (SSTZF) is a drug used in clinical treatment for orthopedic diseases. It has been found that SSTZF can have a good treatment for IDD. But the exact mechanism has not been clarified. The results showed that SSTZF protects against LSI-induced degeneration of cartilage endplates and intervertebral discs. Meanwhile, SSTZF treatment dramatically reduces the expression of inflammatory factor as well as the expression of catabolism protein and upregulates the expression of anabolism protein in LSI-induced mice. In addition, SSTZF delayed the progression of LSI-induced IDD via downregulation the level of NF-κB signaling key gene RELA and phosphorylation of key protein P65 in endplate chondrocytes. Our study has illustrated the treatment as well as the latent mechanism of SSTZF in IDD.
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Affiliation(s)
- Xu Wang
- Institute of Orthopedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310006, China
- The First College of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Qinghe Zeng
- Institute of Orthopedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310006, China
- The First College of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Qinwen Ge
- Institute of Orthopedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310006, China
- The First College of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Songfeng Hu
- Institute of Orthopedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310006, China
- The First College of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, 310053, China
- Department of Orthopaedics and Traumatology, Shaoxing Hospital of Traditional Chinese Medicine, Shaoxing, 312000, Zhejiang, China
| | - Hongting Jin
- Institute of Orthopedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310006, China
| | - Ping-Er Wang
- Institute of Orthopedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310006, China.
| | - Ju Li
- Institute of Orthopedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310006, China.
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, China.
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17
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Cheng P, Wei H, Chen H, Wang Z, Mao P, Zhang H. DNMT3a-mediated methylation of PPARγ promote intervertebral disc degeneration by regulating the NF-κB pathway. J Cell Mol Med 2024; 28:e18048. [PMID: 37986543 PMCID: PMC10826446 DOI: 10.1111/jcmm.18048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/01/2023] [Accepted: 11/06/2023] [Indexed: 11/22/2023] Open
Abstract
Intervertebral disc degeneration (IVDD) is a common chronic musculoskeletal disease that causes chronic low back pain and imposes an immense financial strain on patients. The pathological mechanisms underlying IVDD have not been fully elucidated. The development of IVDD is closely associated with abnormal epigenetic changes, suggesting that IVDD progression may be controlled by epigenetic mechanisms. Consequently, this study aimed to investigate the role of epigenetic regulation, including DNA methyltransferase 3a (DNMT3a)-mediated methylation and peroxisome proliferator-activated receptor γ (PPARγ) inhibition, in IVDD development. The expression of DNMT3a and PPARγ in early and late IVDD of nucleus pulposus (NP) tissues was detected using immunohistochemistry and western blotting analyses. Cellularly, DNMT3a inhibition significantly inhibited IL-1β-induced apoptosis and extracellular matrix (ECM) degradation in rat NP cells. Pretreatment with T0070907, a specific inhibitor of PPARγ, significantly reversed the anti-apoptotic and ECM degradation effects of DNMT3a inhibition. Mechanistically, DNMT3a modified PPARγ promoter hypermethylation to activate the nuclear factor-κB (NF-κB) pathway. DNMT3a inhibition alleviated IVDD progression. Conclusively, the results of this study show that DNMT3a activates the NF-κB pathway by modifying PPARγ promoter hypermethylation to promote apoptosis and ECM degradation. Therefore, we believe that the ability of DNMT3a to mediate the PPARγ/NF-κB axis may provide new ideas for the potential pathogenesis of IVDD and may become an attractive target for the treatment of IVDD.
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Affiliation(s)
- Peng Cheng
- Department of Emergency MedicineLanzhou University Second HospitalLanzhouGansuPR China
- Department of OrthopedicsLanzhou University Second HospitalLanzhouGansu ProvincePR China
| | - Hang‐Zhi Wei
- Department of Department of General SurgeryLanzhou University Second HospitalLanzhouGansuPR China
| | - Hai‐Wei Chen
- Department of Emergency MedicineLanzhou University Second HospitalLanzhouGansuPR China
| | - Zhi‐Qiang Wang
- Department of Emergency MedicineLanzhou University Second HospitalLanzhouGansuPR China
| | - Peng Mao
- The Second Clinical Medical CollegeLanzhou UniversityLanzhouGansuPR China
| | - Hai‐Hong Zhang
- Department of OrthopedicsLanzhou University Second HospitalLanzhouGansu ProvincePR China
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18
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Xie G, Wu T, Ji G, Wu H, Lai Y, Wei B, Huang W. Circular RNA and intervertebral disc degeneration: unravelling mechanisms and implications. Front Mol Biosci 2023; 10:1302017. [PMID: 38192334 PMCID: PMC10773835 DOI: 10.3389/fmolb.2023.1302017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/05/2023] [Indexed: 01/10/2024] Open
Abstract
Low back pain (LBP) is a major public health problem worldwide and a significant health and economic burden. Intervertebral disc degeneration (IDD) is the reason for LBP. However, we have not identified effective therapeutic strategies to address this challenge. With accumulating knowledge on the role of circular RNAs in the pathogenesis of IDD, we realised that circular RNAs (circRNAs) may have tremendous therapeutic potential and clinical application prospects in this field. This review presents an overview of the current understanding of characteristics, classification, biogenesis, and function of circRNAs and summarises the protective and detrimental circRNAs involved in the intervertebral disc that have been studied thus far. This review is aimed to help researchers better understand the regulatory role of circRNAs in the progression of IDD, reveal their clinical therapeutic potential, and provide a theoretical basis for the prevention and targeted treatment of IDD.
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Affiliation(s)
- Guohao Xie
- Orthopaedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Tingrui Wu
- Orthopaedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Guangju Ji
- Orthopaedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Hang Wu
- Orthopaedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yue Lai
- Orthopaedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Bo Wei
- Orthopaedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Wenhua Huang
- Orthopaedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
- Guangdong Engineering Research Center for Translation of Medical 3D Printing Application, Guangdong Provincial Key Laboratory of Medical Biomechanics, National Key Discipline of Human Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
- Guangdong Medical Innovation Platform for Translation of 3D Printing Application, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
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19
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Wang Y, Hu S, Zhang W, Zhang B, Yang Z. Emerging role and therapeutic implications of p53 in intervertebral disc degeneration. Cell Death Discov 2023; 9:433. [PMID: 38040675 PMCID: PMC10692240 DOI: 10.1038/s41420-023-01730-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 11/11/2023] [Accepted: 11/16/2023] [Indexed: 12/03/2023] Open
Abstract
Lower back pain (LBP) is a common degenerative musculoskeletal disease that imposes a huge economic burden on both individuals and society. With the aggravation of social aging, the incidence of LBP has increased globally. Intervertebral disc degeneration (IDD) is the primary cause of LBP. Currently, IDD treatment strategies include physiotherapy, medication, and surgery; however, none can address the root cause by ending the degeneration of intervertebral discs (IVDs). However, in recent years, targeted therapy based on specific molecules has brought hope for treating IDD. The tumor suppressor gene p53 produces a transcription factor that regulates cell metabolism and survival. Recently, p53 was shown to play an important role in maintaining IVD microenvironment homeostasis by regulating IVD cell senescence, apoptosis, and metabolism by activating downstream target genes. This study reviews research progress regarding the potential role of p53 in IDD and discusses the challenges of targeting p53 in the treatment of IDD. This review will help to elucidate the pathogenesis of IDD and provide insights for the future development of precision treatments.
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Affiliation(s)
- Yidian Wang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
| | - Shouye Hu
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Weisong Zhang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Binfei Zhang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zhi Yang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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20
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Li X, Hou Q, Yuan W, Zhan X, Yuan H. Inhibition of miR-96-5p alleviates intervertebral disc degeneration by regulating the peroxisome proliferator-activated receptor γ/nuclear factor-kappaB pathway. J Orthop Surg Res 2023; 18:916. [PMID: 38041147 PMCID: PMC10691123 DOI: 10.1186/s13018-023-04412-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 11/26/2023] [Indexed: 12/03/2023] Open
Abstract
BACKGROUND Intervertebral disc degeneration (IDD) is the main pathogenesis of low back pain. MicroRNAs (miRNAs) have been found to exert regulatory function in IDD. This study aimed to investigate the effect and potential mechanism of miR-96-5p in IDD. METHODS In vitro cell model of IDD was established by treating human nucleus pulposus cells (HNPCs) with interleukin-1β (IL-1β). The level of peroxisome proliferator-activated receptor γ (PPARγ) was examined in the IDD cell model by Western blot and quantification real-time reverse transcription-polymerase chain reaction (qRT-PCR). The expression level of miR-96-5p was detected by RT-qPCR. Effects of PPARγ or/and PPARγ agonist on inflammatory factors, extracellular matrix (ECM), apoptosis, and nuclear factor-kappaB (NF-κB) nuclear translocation were examined through enzyme-linked immunosorbent assay (ELISA), Western blot, flow cytometry assay, and immunofluorescence staining. The Starbase database and dual luciferase reporter assay were used to predict and validate the targeting relationship between miR-96-5p and PPARγ, and rescue assay was performed to gain insight into the role of miR-96-5p on IDD through PPARγ/NF-κB signaling. RESULTS PPARγ expression reduced with concentration and time under IL-1β stimulation, while miR-96-5p expression showed the reverse trend (P < 0.05). Upregulation or/and activation of PPARγ inhibited IL-1β-induced the increase in inflammatory factor levels, apoptosis, degradation of the ECM, and the nuclear translocation of NF-κB (P < 0.05). MiR-96-5p was highly expressed but PPARγ was lowly expressed in IDD, while knockdown of PPARγ partially reversed remission of IDD induced by miR-96-5p downregulation (P < 0.05). MiR-96-5p promoted NF-κB entry into the nucleus but PPARγ inhibited this process. CONCLUSION Inhibition of miR-96-5p suppressed IDD progression by regulating the PPARγ/NF-κB pathway. MiR-96-5p may be a promising target for IDD treatment clinically.
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Affiliation(s)
- Xusheng Li
- Department of Spine Surgery, General Hospital of Ningxia Medical University, No. 804 Shengli Street, Xingqing District, Yinchuan, 750004, China
- Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Jalan Hospital, Sungai Buloh, 47000, Malaysia
| | - Qian Hou
- Department of Spine Surgery, General Hospital of Ningxia Medical University, No. 804 Shengli Street, Xingqing District, Yinchuan, 750004, China
| | - Wenqi Yuan
- Department of Spine Surgery, General Hospital of Ningxia Medical University, No. 804 Shengli Street, Xingqing District, Yinchuan, 750004, China
| | - Xuehua Zhan
- Department of Spine Surgery, General Hospital of Ningxia Medical University, No. 804 Shengli Street, Xingqing District, Yinchuan, 750004, China
| | - Haifeng Yuan
- Department of Spine Surgery, General Hospital of Ningxia Medical University, No. 804 Shengli Street, Xingqing District, Yinchuan, 750004, China.
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21
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Gao W, Bao J, Zhang Y, He D, Zhang L, Zhang J, Pan H, Wang D. Injectable kaempferol-loaded fibrin glue regulates the metabolic balance and inhibits inflammation in intervertebral disc degeneration. Sci Rep 2023; 13:20001. [PMID: 37968507 PMCID: PMC10651831 DOI: 10.1038/s41598-023-47375-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 11/13/2023] [Indexed: 11/17/2023] Open
Abstract
To construct an injectable fibrin glue system loaded with kaempferol (FG@F) to improve the bioavailability of kaempferol and observe its efficacy in the treatment of intervertebral disc degeneration (IVDD). Kaempferol-loaded fibrin glue was first synthesized in advance. Subsequently, the materials were characterized by various experimental methods. Then, nucleus pulposus cells (NPCs) were stimulated with lipopolysaccharide (LPS) to establish a degenerative cell model, and the corresponding intervention treatment was conducted to observe the effect in vitro. Finally, the tail disc of rats was punctured to establish a model of IVDD, and the therapeutic effect of the material in vivo was observed after intervertebral disc injection. The FG@F system has good injectability, sustained release and biocompatibility. This treatment reduced the inflammatory response associated with IVDD and regulated matrix synthesis and degradation. Animal experimental results showed that the FG@F system can effectively improve needle puncture-induced IVDD in rats. The FG@F system has better efficacy than kaempferol or FG alone due to its slow release and mechanical properties. The drug delivery and biotherapy platform based on this functional system might also serve as an alternative therapy for IVDD.
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Affiliation(s)
- Wenshuo Gao
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), Hangzhou, 310000, Zhejiang, People's Republic of China
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, Hebei, People's Republic of China
| | - Jianhang Bao
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), Hangzhou, 310000, Zhejiang, People's Republic of China
- Department of Orthopaedics, Yiwu Central Hospital, Yiwu, 322000, Zhejiang, People's Republic of China
| | - Yujun Zhang
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), Hangzhou, 310000, Zhejiang, People's Republic of China
| | - Du He
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), Hangzhou, 310000, Zhejiang, People's Republic of China
| | - Liangping Zhang
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), Hangzhou, 310000, Zhejiang, People's Republic of China
| | - Jun Zhang
- Department of General Surgery, Institute of Orthopaedics and Traumatology, Hangzhou Dingqiao Hospital, Huanding Road NO 1630, Hangzhou, 310021, Zhejiang, People's Republic of China
| | - Hao Pan
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), Hangzhou, 310000, Zhejiang, People's Republic of China.
- Department of Orthopaedics, Hangzhou Dingqiao Hospital, Huanding Road NO 1630, Hangzhou, 310021, Zhejiang, People's Republic of China.
- Institute of Orthopaedics and Traumatology, Hangzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical University, Tiyuchang Road NO 453, Hangzhou, 310007, Zhejiang, People's Republic of China.
| | - Dong Wang
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), Hangzhou, 310000, Zhejiang, People's Republic of China.
- Department of Orthopaedics, Hangzhou Dingqiao Hospital, Huanding Road NO 1630, Hangzhou, 310021, Zhejiang, People's Republic of China.
- Institute of Orthopaedics and Traumatology, Hangzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical University, Tiyuchang Road NO 453, Hangzhou, 310007, Zhejiang, People's Republic of China.
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Yao D, Li M, Wang K, Jin S, Zeng W, Liao Z, Chen E, Liang Y, Xing T, Wen G, Liang C, Su K, Lu S, Che Z, Li Y, Huang L. Emodin ameliorates matrix degradation and apoptosis in nucleus pulposus cells and attenuates intervertebral disc degeneration through LRP1 in vitro and in vivo. Exp Cell Res 2023; 432:113794. [PMID: 37741491 DOI: 10.1016/j.yexcr.2023.113794] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/17/2023] [Accepted: 09/18/2023] [Indexed: 09/25/2023]
Abstract
Low back pain (LBP) is the leading cause of disability worldwide, with a strong correlation to intervertebral disc degeneration (IDD). Inflammation-induced extracellular matrix (ECM) degradation plays a major role in IDD's progression. Emodin, known for its anti-inflammatory effects and ability to inhibit ECM degradation in osteoarthritis, but its role in IDD is unclear. Our study aimed to explore emodin's role and mechanisms on IDD both in vivo and in vitro. We discovered that emodin positively regulated anabolic markers (COL2A1, aggrecan) and negatively impacted catabolic markers (MMP3, MMP13) in nucleus pulposus cells, while also inhibiting cell apoptosis under inflammation environment. We revealed that emodin inhibits inflammation-induced NF-ĸB activation by suppressing the degradation of LRP1 via the proteasome pathway. Additionally, LRP1 was validated as essential to emodin's regulation of ECM metabolism and apoptosis, both in vitro and in vivo. Ultimately, we demonstrated that emodin effectively alleviates IDD in a rat model. Our findings uncover the novel pathway of emodin inhibiting ECM degradation and apoptosis through the inhibition of NF-κB via LRP1, thus alleviating IDD. This study not only broadens our understanding of emodin's role and mechanism in IDD treatment but also guides future therapeutic interventions.
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Affiliation(s)
- Dengbo Yao
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China; Department of Orthopedics Surgery, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Ming Li
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Kun Wang
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China; Department of Orthopedics Surgery, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Song Jin
- Department of Orthopedics Surgery, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Weike Zeng
- Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Zhuangyao Liao
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Enming Chen
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Yuwei Liang
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Tong Xing
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China; Department of Orthopedics Surgery, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Guoming Wen
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China; Department of Orthopedics Surgery, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Changchun Liang
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China; Department of Orthopedics Surgery, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Kaihui Su
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Shixin Lu
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China; Department of Orthopedics Surgery, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Zhen Che
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Yuxi Li
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China.
| | - Lin Huang
- Department of Orthopedics Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China.
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Hua KF, Li LH, Yu HC, Wong WT, Hsu HT. Leptin Induces MMP-1 Expression Through the RhoA/ERK1/2/NF-κB Axis in Human Intervertebral Disc Cartilage Endplate-Derived Stem Cells. J Inflamm Res 2023; 16:5235-5248. [PMID: 38026238 PMCID: PMC10657743 DOI: 10.2147/jir.s431026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/31/2023] [Indexed: 12/01/2023] Open
Abstract
Purpose Intervertebral disc (IVD) degeneration, associated with aging, may cause low back pain and disability, with obesity as a significant risk factor. In a prior study, we found a positive correlation between IVD degeneration and levels of matrix metalloproteinase-1 (MMP-1) and leptin. Yet, the interaction between MMP-1 and leptin in IVD degeneration is unclear. Our research seeks to explore leptin's influence on MMP-1 expression and the underlying mechanisms in human intervertebral disc cartilage endplate-derived stem cells, specifically SV40 cells. Methods The mRNA and protein expression in leptin-stimulated SV40 cells were assessed using RT-real-time PCR and Western blotting or ELISA, respectively. We examined leptin-mediated RhoA activation through a GTP-bound RhoA pull-down assay. Furthermore, the phosphorylation levels of mitogen-activated protein kinases and AKT in leptin-stimulated SV40 cells were analyzed using Western blotting. The activation of NF-κB by leptin was investigated by assessing phosphorylation of IKKα/β, IκBα, and NF-κB p65, along with the nuclear translocation of NF-κB p65. To understand the underlying mechanism behind leptin-mediated MMP-1 expression, we employed specific inhibitors. Results Leptin triggered the mRNA and protein expression of MMP-1 in SV40 cells. In-depth mechanistic investigations uncovered that leptin heightened RhoA activity, promoted ERK1/2 phosphorylation, and increased NF-κB activity. However, leptin did not induce phosphorylation of JNK1/2, p38, or AKT. When we inhibited RhoA, ERK1/2, and NF-κB, it resulted in a decrease in MMP-1 expression. Conversely, inhibition of reactive oxygen species and NADPH oxidase did not yield the same outcome. Additionally, inhibiting RhoA or ERK1/2 led to a reduction in leptin-induced NF-κB activation. Moreover, inhibiting RhoA also decreased leptin-mediated ERK1/2 phosphorylation. Conclusion These results indicated that leptin induced MMP-1 expression in SV40 cells through the RhoA/ERK1/2/NF-κB axis. This study provided the pathogenic role of leptin and suggested the potential therapeutic target for IVD degeneration.
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Affiliation(s)
- Kuo-Feng Hua
- Department of Biotechnology and Animal Science, National Ilan University, Yilan, 26047, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, 404333, Taiwan
| | - Lan-Hui Li
- Department of Laboratory Medicine, Linsen, Chinese Medicine and Kunming Branch, Taipei City Hospital, Taipei, 108, Taiwan
| | - Hsin-Chiao Yu
- Division of Neurosurgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, 231, Taiwan
| | - Wei-Ting Wong
- Department of Biotechnology and Animal Science, National Ilan University, Yilan, 26047, Taiwan
| | - Hsien-Ta Hsu
- Division of Neurosurgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, 231, Taiwan
- School of Medicine, Buddhist Tzu Chi University, Hualien, 970, Taiwan
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Karchevskaya AE, Poluektov YM, Korolishin VA. Understanding Intervertebral Disc Degeneration: Background Factors and the Role of Initial Injury. Biomedicines 2023; 11:2714. [PMID: 37893088 PMCID: PMC10604877 DOI: 10.3390/biomedicines11102714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/29/2023] Open
Abstract
The etiology of intervertebral disc degeneration (IVDD) is complex and multifactorial, and it is still not fully understood. A better understanding of the pathogenesis of IVDD will help to improve treatment regimens and avoid unnecessary surgical aggression. In order to summarize recent research data on IVDD pathogenesis, including genetic and immune factors, a literature review was conducted. The pathogenesis of IVDD is a complex multifactorial process without an evident starting point. There are extensive data on the role of the different genetic factors affecting the course of the disease, such as mutations in structural proteins and enzymes involved in the immune response. However, these factors alone are not sufficient for the development of the disease. Nevertheless, like mechanical damage, they can also be considered risk factors for IVDD. In conclusion, currently, there is no consensus on a single concept for the pathogenesis of IVDD. We consider the intervertebral disc autoimmune damage hypothesis to be the most promising hypothesis for clinicians, because it can be extrapolated to all populations and does not counteract other factors. The genetic factors currently known do not allow for building effective predictive models; however, they can be used to stratify the risks of individual populations.
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Affiliation(s)
- Anna E. Karchevskaya
- Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, 5A Butlerova Str., 117485 Moscow, Russia;
- Medical Faculty, I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), 8-2 Trubetskaya Str., 119991 Moscow, Russia
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str. 32, 119334 Moscow, Russia
| | - Yuri M. Poluektov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str. 32, 119334 Moscow, Russia
- Department of Spinal Surgery, Burdenko Neurosurgical Institute, 4th-Tverskaya-Yamskaya Str. 16, 125047 Moscow, Russia
| | - Vasiliy A. Korolishin
- Russian Medical Academy of Postgraduate Education Studies, 2/1 Barrikadnaya Str., Building 1, 125993 Moscow, Russia;
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25
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Qu Y, Qiu L, Qiu H, Shen Y, Tang M, Huang Y, Peng Y, Wang J, Fu Q. Notopterol alleviates the progression of osteoarthritis: An in vitro and in vivo study. Cytokine 2023; 169:156309. [PMID: 37517294 DOI: 10.1016/j.cyto.2023.156309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/05/2023] [Accepted: 07/25/2023] [Indexed: 08/01/2023]
Abstract
Osteoarthritis (OA) is a prevalent degenerative joint disorder caused by the progressive destruction of cartilage and inflammation in the articular cavity. Studies have proved that the inhibition of articular cartilage destruction and generation of inflammatory factors can be effective strategies for treating OA. Notopterol (NOT) is a quality control index of Notopterygium incisum Ting ex H. T. Chang (N. incisum) with anti-inflammatory, antioxidant, and analgesic activities. Moreover, NOT has been used for many years to treat joint diseases. A study using human C28/I2 cells suggested that NOT down-regulated the hypersecretion of inflammatory mediators and alleviated the degradation of the extracellular matrix (ECM). In addition, NOT decreased the overproduction of reactive oxygen species (ROS) and chondrocyte apoptosis through the nuclear factor erythroid-2-related factor 2 (Nrf2) signaling pathway. NOT exerted a chondroprotective effect by partly inhibiting the Janus kinase 2/signal transducers and activators of transcription 3 (JAK2/STAT3) and phosphoinositide 3-kinase/protein kinase B (PI3K/AKT) signaling pathways and regulating the nuclear factor Nrf2/heme oxygenase-1(HO-1) signaling pathway. In vivo, NOT improved the destruction of articular cartilage in a rat OA model, which may be related to the inhibition of tumor necrosis factor α (TNF-α), interleukin (IL)-1β, IL-6, and IL-12 expressions in synovial fluid. In summary, these results showed that NOT alleviated the progression of OA and is expected to become a new therapy for treating OA clinically.
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Affiliation(s)
- Yuhan Qu
- Key Laboratory of Drug-Targeting and Drug Delivery System of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China; School of Food and Biological engineering, Chengdu University, Chengdu 610106, China
| | - Lu Qiu
- Key Laboratory of Drug-Targeting and Drug Delivery System of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China; School of Chemical Engineering, Sichuan University, Chengdu, 610065, Sichuan, China.
| | - Hui Qiu
- Key Laboratory of Drug-Targeting and Drug Delivery System of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Yue Shen
- Key Laboratory of Drug-Targeting and Drug Delivery System of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Min Tang
- Key Laboratory of Drug-Targeting and Drug Delivery System of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Yuehui Huang
- Key Laboratory of Drug-Targeting and Drug Delivery System of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Yi Peng
- Key Laboratory of Drug-Targeting and Drug Delivery System of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Jun Wang
- Department of Pharmacy, Chengdu Integrated TCM and Western Medicine Hospital, Chengdu 610041, China.
| | - Qiang Fu
- Key Laboratory of Drug-Targeting and Drug Delivery System of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China.
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Vernengo A, Bumann H, Kluser N, Soubrier A, Šećerović A, Gewiess J, Jansen JU, Neidlinger-Wilke C, Wilke HJ, Grad S. Chemonucleolysis combined with dynamic loading for inducing degeneration in bovine caudal intervertebral discs. Front Bioeng Biotechnol 2023; 11:1178938. [PMID: 37711456 PMCID: PMC10499327 DOI: 10.3389/fbioe.2023.1178938] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 08/01/2023] [Indexed: 09/16/2023] Open
Abstract
Chemonucleolysis has become an established method of producing whole organ culture models of intervertebral disc (IVD) degeneration. However, the field needs more side-by-side comparisons of the degenerative effects of the major enzymes used in chemonucleolysis towards gaining a greater understanding of how these organ culture models mimic the wide spectrum of characteristics observed in human degeneration. In the current work we induced chemonucleolysis in bovine coccygeal IVDs with 100 µL of papain (65 U/mL), chondroitinase ABC (chABC, 5 U/mL), or collagenase II (col'ase, 0.5 U/mL). Each enzyme was applied in a concentration projected to produce moderate levels of degeneration. After 7 days of culture with daily dynamic physiological loading (0.02-0.2 MPa, 0.2 Hz, 2 h), the cellular, biochemical and histological properties of the IVDs were evaluated in comparison to a PBS-injected control. Papain and collagenase, but not chABC, produced macroscopic voids in the tissues. Compared to day 0 intact IVDs, papain induced the greatest magnitude glycosaminoglycan (GAG) loss compared to chABC and col'ase. Papain also induced the greatest height loss (3%), compared to 0.7%, 1.2% and 0.4% for chABC, col'ase, and PBS, respectively. Cell viability in the region adjacent to papain and PBS-injection remained at nearly 100% over the 7-day culture period, whereas it was reduced to 60%-70% by chABC and col'ase. Generally, enzyme treatment tended to downregulate gene expression for major ECM markers, type I collagen (COL1), type II collagen (COL2), and aggrecan (ACAN) in the tissue adjacent to injection. However, chABC treatment induced an increase in COL2 gene expression, which was significant compared to the papain treated group. In general, papain and col'ase treatment tended to recapitulate aspects of advanced IVD degeneration, whereas chABC treatment captured aspects of early-stage degeneration. Chemonucleolysis of whole bovine IVDs is a useful tool providing researchers with a robust spectrum of degenerative changes and can be utilized for examination of therapeutic interventions.
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Affiliation(s)
| | | | | | | | | | - Jan Gewiess
- AO Research Institute Davos, Davos, Switzerland
| | - Jan Ulrich Jansen
- Institute of Orthopaedic Research and Biomechanics, Ulm University, Ulm, Germany
| | | | - Hans-Joachim Wilke
- Institute of Orthopaedic Research and Biomechanics, Ulm University, Ulm, Germany
| | - Sibylle Grad
- AO Research Institute Davos, Davos, Switzerland
- Department of Health Sciences and Technology, ETH Zürich, Zurich, Switzerland
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Li X, Zhang J, Wang B, Chen C, Zhang E, Lv Z, He Q, Hu Y, Wang X, Zhang F. USP24-dependent stabilization of Runx2 recruits a p300/NCOA3 complex to transactivate ADAMTS genes and promote degeneration of intervertebral disc in chronic inflammation mice. Biol Direct 2023; 18:37. [PMID: 37415159 PMCID: PMC10324278 DOI: 10.1186/s13062-023-00395-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 07/02/2023] [Indexed: 07/08/2023] Open
Abstract
BACKGROUND Intervertebral disc degeneration (IDD) naturally occurs during the aging process. Its occurrence is closely related to chronic inflammation; however, the causal relationship between them is controversial. This study aimed to investigate if inflammation would promote IDD incidence and explore the underlying mechanism. METHODS A chronic inflammation mouse model was established by intraperitoneal injection of lipopolysaccharide (LPS). Enzyme-linked immunosorbent assay was performed to determine proinflammatory cytokines in serum. Histological staining was used to evaluate the degeneration of IVDs. Immunoblots and RT-qPCR analyses were performed to measure protein and mRNA expression levels. Immunoprecipitation, mass spectrometry, and co-immunoprecipitation assays were used to determine the assembly of protein complex. RESULTS We found that an inflammatory microenvironment activated p38 kinase, which phosphorylated the Runx2 transcription factor at the Ser28 site. The phosphorylated Runx2 (pRunx2) then recruited a deubiquitinase, ubiquitin-specific peptidase 24 (USP24), which stabilized pRunx2 and protected it from ubiquitin-dependent proteasomal degradation. The stabilized pRunx2 recruited histone acetyltransferase p300 and nuclear receptor coactivator 3 (NCOA3) to assemble a complex. This NCOA3-p300-pRunx2 complex then transactivated the expression of 13 ADAMTS (a disintegrin and metalloproteinase with thrombospondin motif) genes, thereby promoting the degradation of extracellular matrix (ECM) in intervertebral discs (IVDs) and causing IDD. Administration of either a p38 inhibitor (doramapimod), a NCOA3 inhibitor (bufalin), or a p300 inhibitor (EML425) significantly decreased the expression of the 13 ADAMTS genes and slowed the degeneration of IVDs. CONCLUSION In summary, our results demonstrate that USP24 protects pRunx2 from proteasomal degradation under chronic inflammation conditions, enabling pRunx2 to transactivate ADAMTS genes and degrade ECM. Our findings provide direct evidence that chronic inflammation triggers IDD and offer a therapeutic strategy for retarding IDD in patients with chronic inflammation.
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Affiliation(s)
- Xingguo Li
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Jun Zhang
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Bing Wang
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Chao Chen
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Enyu Zhang
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Zhengpin Lv
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Qicong He
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Yaoquan Hu
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Xuenan Wang
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Fan Zhang
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China.
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Bao J, Gao W, Zhang W, Wang D, Pan H. Fibrin glue delivery system containing rhein ameliorates intervertebral disc degeneration by anti-inflammatory efficacy. J Orthop Surg Res 2023; 18:485. [PMID: 37415165 DOI: 10.1186/s13018-023-03961-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/27/2023] [Indexed: 07/08/2023] Open
Abstract
PURPOSE To construct an injectable, sustained-release fibrin gel containing rhein to solve the problem of low bioavailability of rhein, and observe its efficacy in the treatment of intervertebral disc degeneration. METHODS The fibrin gel containing rhein was first synthesized in advance. Subsequently, the materials were characterized by various experimental methods. Secondly, the degenerative cell model was constructed by stimulating nucleus pulposus cells with lipopolysaccharide (LPS), and the corresponding intervention treatment was carried out to observe the effect in vitro. Finally, the rat tail intervertebral disc was acupunctured by needles to establish the intervertebral disc degeneration model, and the effect of the material was observed through intradiscal injection. RESULTS The fibrin glue containing rhein (rhein@FG) showed good injectability, sustained release and biocompatibility. Rhein@FG can improve the LPS-induced inflammatory microenvironment, regulate ECM metabolic disorders of nucleus pulposus cells and aggregation of the NLRP3 inflammasome in vitro, and inhibit cell pyroptosis. Furthermore, in vivo experiments, rhein@FG effectively prevented needle puncture-induced intervertebral disc degeneration in rats. CONCLUSIONS Rhein@FG has better efficacy than rhein or FG alone due to its slow release and mechanical properties, which can be used as a potential replacement therapy for intervertebral disc degeneration.
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Affiliation(s)
- Jianhang Bao
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), No. 453 Tiyuchang Road, Xihu District, Hangzhou, 310007, Zhejiang Province, People's Republic of China
| | - Wenshuo Gao
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), No. 453 Tiyuchang Road, Xihu District, Hangzhou, 310007, Zhejiang Province, People's Republic of China
| | - Wei Zhang
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), No. 453 Tiyuchang Road, Xihu District, Hangzhou, 310007, Zhejiang Province, People's Republic of China
| | - Dong Wang
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), No. 453 Tiyuchang Road, Xihu District, Hangzhou, 310007, Zhejiang Province, People's Republic of China.
- Department of Orthopaedics, Hangzhou Dingqiao Hospital, No. 1630 Huanding Road, Shangcheng District, Hangzhou, 310021, Zhejiang Province, People's Republic of China.
- Institute of Orthopaedics and Traumatology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, No. 453 Tiyuchang Road, Xihu District, Hangzhou, 310007, People's Republic of China.
| | - Hao Pan
- Department of Orthopaedics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine), No. 453 Tiyuchang Road, Xihu District, Hangzhou, 310007, Zhejiang Province, People's Republic of China.
- Institute of Orthopaedics and Traumatology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, No. 453 Tiyuchang Road, Xihu District, Hangzhou, 310007, People's Republic of China.
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Liu H, Li Y, Li Z, Li J, Zhang Q, Cao S, Li H. A Study Based on Network Pharmacology Decoding the Multi-Target Mechanism of Duhuo Jisheng Decoction for the Treatment of Intervertebral Disc Degeneration. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2023; 2023:7091407. [PMID: 37288170 PMCID: PMC10243954 DOI: 10.1155/2023/7091407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/21/2022] [Accepted: 03/18/2023] [Indexed: 06/09/2023]
Abstract
Intervertebral disc degeneration (IDD) poses a grim public health impact. Duhuo Jisheng Decoction (DJD), a traditional Chinese medicine formula, has recently received significant attention for its efficacy and safety in treating IDD. However, the pathological processes of IDD in which DJD interferes and molecular mechanism involved are poorly understood, which brings difficulties to the clinical practice of DJD for the treatment of IDD. This study systematically investigated the underlying mechanism of DJD treatment of IDD. Network pharmacology approaches were employed, integrating molecular docking and random walk with restart (RWR) algorithm, to identify key compounds and targets for DJD in the treatment of IDD. Bioinformatics approaches were used to further explore the biological insights in DJD treatment of IDD. The analysis identifies AKT1, PIK3R1, CHUK, ALB, TP53, MYC, NR3C1, IL1B, ERBB2, CAV1, CTNNB1, AR, IGF2, and ESR1 as key targets. Responses to mechanical stress, oxidative stress, cellular inflammatory responses, autophagy, and apoptosis are identified as the critical biological processes involved in DJD treatment of IDD. The regulation of DJD targets in extracellular matrix components, ion channel regulation, transcriptional regulation, synthesis and metabolic regulation of reactive oxygen products in the respiratory chain and mitochondria, fatty acid oxidation, the metabolism of Arachidonic acid, and regulation of Rho and Ras protein activation are found to be potential mechanisms in disc tissue response to mechanical stress and oxidative stress. MAPK, PI3K/AKT, and NF-κB signaling pathways are identified as vital signaling pathways for DJD to treat IDD. Quercetin and Kaempferol are assigned a central position in the treatment of IDD. This study contributes to a more comprehensive understanding of the mechanism of DJD in treating IDD. It provides a reference for applying natural products to delay the pathological process of IDD.
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Affiliation(s)
- Hao Liu
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yumin Li
- Department of Orthopedics, Civil Aviation General Hospital, No. 1, Gaojing Street, Chaoyang District, Beijing 100123, China
| | - Zhujun Li
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jie Li
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Qiongchi Zhang
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shuai Cao
- Department of Orthopedics, Civil Aviation General Hospital, No. 1, Gaojing Street, Chaoyang District, Beijing 100123, China
| | - Haopeng Li
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Hu B, Lin S, Lin S, Rui G. Ginkgetin Alleviates Intervertebral Disc Degeneration by Inhibiting Apoptosis, Inflammation, and Disturbance of Extracellular Matrix Synthesis and Catabolism via Inactivation of NLRP3 Inflammasome. Immunol Invest 2023:1-15. [PMID: 37154418 DOI: 10.1080/08820139.2023.2205884] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
BACKGROUND Apoptosis, inflammation, and the extracellular matrix (ECM) synthesis and catabolism are compromised with intervertebral disc degeneration (IDD). Ginkgetin (GK) has been demonstrated to alleviate several diseases; however, its effect on IDD remains unknown. METHODS The nucleus pulposus cells (NPCs) were stimulated with interleukin (IL)-1β to construct the IDD models in vitro. Rats were used for the construction of the IDD models in vivo via the fibrous ring puncture method. The effect and mechanism of GK on IDD were determined by cell counting kit-8 (CCK-8), flow cytometry, western blot, real-time quantitative polymerase chain reaction (RT-qPCR), enzyme‑linked immunosorbent assay (ELISA), hematoxylin and eosin (HE) and safranine O staining, and immunohistochemistry (IHC) assays, respectively. RESULTS GK increased the cell viability and upregulated the expressions of anti-apoptosis and ECM synthesis markers in NPCs treated with IL-1β. GK also decreased apoptosis rate, and downregulated the expressions of proteins related to pro-apoptosis, ECM catabolism, and inflammation in vitro. Mechanically, GK reduced the expression of nucleotide binding oligomeric domain like receptor protein 3 (NLRP3) inflammasome-related proteins. Overexpression of NLRP3 reversed the effect of GK on the proliferation, apoptosis, inflammation, and ECM degradation in IL-1β-induced NPCs. Moreover, GK attenuated the pathological manifestations, inflammation, ECM degradation, and NLRP3 inflammasome expression in IDD rats. CONCLUSION GK suppressed apoptosis, inflammation, and ECM degradation to alleviate IDD via the inactivation of NLRP3 inflammasome.
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Affiliation(s)
| | | | - Shengrong Lin
- Department of Orthopaedics, The Third Clinical Medical College, Fujian Medical University, Xiamen, China
| | - Gang Rui
- Department of Orthopaedics, The Third Clinical Medical College, Fujian Medical University, Xiamen, China
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Xu J, Shao T, Lou J, Zhang J, Xia C. Aging, cell senescence, the pathogenesis and targeted therapies of intervertebral disc degeneration. Front Pharmacol 2023; 14:1172920. [PMID: 37214476 PMCID: PMC10196014 DOI: 10.3389/fphar.2023.1172920] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/25/2023] [Indexed: 05/24/2023] Open
Abstract
Intervertebral disc degeneration (IVDD) refers to the aging and degenerative diseases of intervertebral disc components such as nucleus pulposus, annulus fibrosus, and cartilage endplate, and is the main cause of chronic low back pain. Over the past few years, many researchers around the world concerned that the degeneration of nucleus pulposus (NP) cells plays the main role in IVDD. The degeneration of NP cells is caused by a series of pathological processes, including oxidative stress, inflammatory response, apoptosis, abnormal proliferation, and autophagy. Interestingly, many studies have found a close relationship between the senescence of NP cells and the progression of NP degeneration. The classical aging pathways also have been confirmed to be involved in the pathological process of IVDD. Moreover, several anti-aging drugs have been used to treat IVDD by inhibiting NP cells senescence, such as proanthocyanidins, resveratrol and bone morphogenetic protein 2. Therefore, this article will systematically list and discuss aging, cell senescence, the pathogenesis and targeted therapies of IVDD, in order to provide new ideas for the treatment of IVDD in the future.
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Affiliation(s)
- Jiongnan Xu
- Center for Plastic and Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital Hangzhou Medical College, Hangzhou, China
- The Second School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ting Shao
- Center for Plastic and Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital Hangzhou Medical College, Hangzhou, China
| | - Jianfen Lou
- Center for Plastic and Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital Hangzhou Medical College, Hangzhou, China
| | - Jun Zhang
- Department of Orthopedics, Zhejiang Provincial People’s Hospital Bijie Hospital, Bijie, Guizhou, China
| | - Chen Xia
- Center for Plastic and Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital Hangzhou Medical College, Hangzhou, China
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Pan H, Li H, Guo S, Wang C, Long L, Wang X, Shi H, Zhang K, Chen H, Li S. The mechanisms and functions of TNF-α in intervertebral disc degeneration. Exp Gerontol 2023; 174:112119. [PMID: 36758650 DOI: 10.1016/j.exger.2023.112119] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/06/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023]
Abstract
Low back pain (LBP) is one of the most common health problems in people's lives, which brings a massive burden to clinicians, and the leading cause of LBP is intervertebral disc degeneration (IDD). IDD is mainly caused by factors such as aging, mechanical stress, and lack of nutrition. The pathological mechanism of IDD is very complex, involving inflammatory response, cell metabolism disorder, and so on. Unfortunately, in the current treatment of IDD, only relieving symptoms as the primary means of relieving a patient's pain cannot effectively inhibit or reverse the progression of IDD. Tumor necrosis factor-α (TNF-α) is a multifunctional pro-inflammatory factor involved in many diseases' pathological processes. With the in-depth study of the pathological mechanism of IDD, more and more evidence has shown that TNF-α is an essential activator of IDD, which is related to the metabolic disorder, inflammatory responses, apoptosis, and other pathological processes of extracellular dissociation in the intervertebral disc. Therefore, anti-TNF-α therapy is an effective therapeutic target for alleviating IDD, especially in inhibiting extracellular matrix degradation and reducing inflammatory responses. This article reviews the pathological role of TNF-α in IDD and the latest research progress of TNF-α inhibitors in treating IDD.
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Affiliation(s)
- Hongyu Pan
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Hongtao Li
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Sheng Guo
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Chenglong Wang
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Longhai Long
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Xiaoqiang Wang
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Houyin Shi
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Kaiquan Zhang
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Hui Chen
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China.
| | - Sen Li
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China.
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Yang X, Lu Y, Zhou H, Jiang HT, Chu L. Integrated proteome sequencing, bulk RNA sequencing and single-cell RNA sequencing to identify potential biomarkers in different grades of intervertebral disc degeneration. Front Cell Dev Biol 2023; 11:1136777. [PMID: 37009470 PMCID: PMC10061025 DOI: 10.3389/fcell.2023.1136777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 03/07/2023] [Indexed: 03/18/2023] Open
Abstract
Low back pain (LBP) is a prevalent health problem worldwide that affects over 80% of adults during their lifetime. Intervertebral disc degeneration (IDD) is a well-recognized leading cause of LBP. IDD is classified into five grades according to the Pfirrmann classification system. The purpose of this study was to identify potential biomarkers in different IDD grades through an integrated analysis of proteome sequencing (PRO-seq), bulk RNA sequencing (bRNA-seq) and single-cell RNA sequencing (scRNA-seq) data. Eight cases of grade I-IV IDD were obtained. Grades I and II were considered non-degenerative discs (relatively normal), whereas grades III and IV were considered degenerative discs. PRO-seq analysis was performed to identify differentially expressed proteins (DEPs) in various IDD grades. Variation analysis was performed on bRNA-seq data to differentiate expressed genes (DEGs) in normal and degenerated discs. In addition, scRNA-seq was performed to validate DEGs in degenerated and non-degenerated nucleus pulposus (NP). Machine learning (ML) algorithms were used to screen hub genes. The receiver operating characteristic (ROC) curve was used to validate the efficiency of the screened hub genes to predict IDD. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed to analyze function enrichment and signaling pathways. Protein-protein interaction (PPI) network was used to prioritize disease-related proteins. SERPINA1, ORM2, FGG and COL1A1 were identified through PRO-seq as the hub proteins involved in regulating IDD. ML algorithms selected ten hub genes, including IBSP, COL6A2, MMP2, SERPINA1, ACAN, FBLN7, LAMB2, TTLL7, COL9A3, and THBS4 in bRNA-seq. Since serine protease inhibitor clade A member 1 (SERPINA1) was the only common gene, its accuracy in degenerated and non-degenerated NP cells was validated using scRNA-seq. Then, the rat degeneration model of caudal vertebra was established. The expression of SERPINA1 and ORM2 was detected using immunohistochemical staining of human and rat intervertebral discs. The results showed that SERPINA1 was poorly expressed in the degenerative group. We further explored the potential function of SERPINA1 by Gene Set Enrichment Analysis (GSEA) and cell-cell communication. Therefore, SERPINA1 can be used as a biomarker to regulate or predict the progress of disc degeneration.
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Accumulation of NCOA1 dependent on HERC3 deficiency transactivates matrix metallopeptidases and promotes extracellular matrix degradation in intervertebral disc degeneration. Life Sci 2023; 320:121555. [PMID: 36878279 DOI: 10.1016/j.lfs.2023.121555] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 03/07/2023]
Abstract
BACKGROUND Matrix metallopeptidases (MMPs) are critical matrix-degrading molecules and they are frequently overexpressed in degenerative discs. This study aimed to investigate the mechanism for MMP upregulation. METHODS Immunoblot and RT-qPCR were used for detecting protein and gene expression levels. 4-month-old and 24-month-old C57BL/6 mice were used for evaluating intervertebral disc degeneration (IDD). An ubiquitination assay was used to determine protein modification. Immunoprecipitation and mass spectrometry were used for identifying protein complex members. RESULTS We identified the elevation of 14 MMPs among 23 members in aged mice with IDD. Eleven of these 14 MMP gene promoters contained a Runx2 (runt-related transcription factor 2) binding site. Biochemical analyses revealed that Runx2 recruited a histone acetyltransferase p300 and a coactivator NCOA1 (nuclear receptor coactivator 1) to assemble a complex, transactivating MMP expression. The deficiency of an E3 ligase called HERC3 (HECT and RLD domain containing E3 ubiquitin-protein ligase 3) resulted in the accumulation of NCOA1 in the inflammatory microenvironment. High throughput screening of small molecules that specifically target the NCOA1-p300 interaction identified a compound SMTNP-191, which showed an inhibitory effect on suppressing MMP expression and attenuating the IDD process in aged mice. CONCLUSION Our data support a model in which deficiency of HERC3 fails to ubiquitinate NCOA1, leading to the assembly of NCOA1-p300-Runx2 and causing the transactivation of MMPs. These findings offer new insight into inflammation-mediated MMP accumulation and also provide a new therapeutic strategy to retard the IDD process.
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Tseng C, Han Y, Lv Z, Song Q, Wang K, Shen H, Chen Z. Glucose-stimulated PGC-1α couples with CBP and Runx2 to mediate intervertebral disc degeneration through transactivation of ADAMTS4/5 in diet-induced obesity mice. Bone 2023; 167:116617. [PMID: 36403758 DOI: 10.1016/j.bone.2022.116617] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022]
Abstract
Emerging evidence suggests that type 2 diabetes mellitus (T2DM) is associated with the pathogenesis of intervertebral disc degeneration (IDD). However, it is still unclear how T2DM contributes to IDD. Herein, we observed the accumulation of blood glucose and degenerative lumbar discs in mice fed a high-fat diet. Detection of differentially expressed genes in degenerative lumbar discs revealed that ADAMTS4 (A Disintegrin and Metalloproteinase with Thrombospondin motifs) and ADAMTS5 genes were significantly increased. In vitro analyses demonstrated that Runt-Related Transcription Factor 2 (Runx2) recruited both PPARgamma Coactivator 1alpha (PGC-1α) and CREB-Binding Protein (CBP) to transactivate the expression of ADAMTS4/5. Glucose stimulation could dose-dependently induce the accumulation of PGC-1α and promoted the binding of the CBP-PGC-1α-Runx2 complex to the promoters of ADAMTS4/5. Depletion of CBP-PGC-1α-Runx2 complex members and treatment with either PGC-1α inhibitor SR-18292 or CBP inhibitor EML425 in vitro could dramatically inhibit the glucose-induced expression of ADAMTS4/5. Administration of SR-18292 and EML425 in diabetic mice could prevent the degeneration of lumbar discs. Collectively, our results revealed a molecular mechanism by which the hyperglycemia-dependent CBP-PGC-1α-Runx2 complex was required for the transactivation of ADAMTS4/5. The blockage of this complex in diabetic mice may help prevent IDD.
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Affiliation(s)
- Changchun Tseng
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yingchao Han
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhendong Lv
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qingxin Song
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Kun Wang
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hongxing Shen
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
| | - Zhi Chen
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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Wang D, Zhu J, Yang Y, Wang Z, Ying Z, Zhang H. The role of the miR-4306/PAK6 axis in degenerative nucleus pulposus cells in human intervertebral disc degeneration. Cell Signal 2023; 102:110528. [PMID: 36423859 DOI: 10.1016/j.cellsig.2022.110528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 10/24/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022]
Abstract
Intervertebral disc degeneration (IDD), characterized by degenerative changes that occur in intervertebral discs due to aging or structural injury, is thought to be the most common cause of lower back pain. Recent studies have shown that microRNAs (miRNAs) have a critical role in the etiopathogenesis of IDD. In the current study, we aimed to determine the role of miRNAs in mediating the underlying mechanisms associated with IDD. First, differentially expressed miRNAs (DEmiRNAs) were identified using the GEO database, and subsequently confirmed by RT-qPCR and in situ hybridization. We found that miR-4306 expression was significantly decreased in human nucleus pulposus (NP) tissues compared with healthy controls, and was negatively correlated with the patients' Pfirrmann grade. To determine the mechanism by which miR-4306 was involved in IDD pathogenesis, we examined the effects of overexpressing or silencing miR-4306 on extracellular matrix (ECM) synthesis/degradation, proliferation, autophagy and apoptosis of human degenerated NP cells isolated from IDD patients. Next, we used dual-luciferase reporter assays to demonstrate that miR-4306 interacted with the 3'-untranslated regions of p21-activated kinase 6 (PAK6) mRNA, resulting in significant suppression of PAK6 expression. This effect was abolished by miR-4306 binding site mutations. Using miR-4306/PAK6 gain-of-function and loss-of-function studies in human degenerated NP cells, we demonstrated that miR-4306 promoted NP cell proliferation, ECM synthesis and autophagy, while inhibiting apoptosis and ECM degradation via PAK6. Thus, our findings indicate that miR-4306, acting via PAK6, has an important role in IDD and can be used as a promising therapeutic target for the treatment of patients with IDD.
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Affiliation(s)
- Dongdong Wang
- Department of Orthopedics, Putuo People's Hospital, Tongji University, Shanghai 200060, China
| | - Ji Zhu
- Department of Plastic Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yuanqing Yang
- Department of Orthopedics, Putuo People's Hospital, Tongji University, Shanghai 200060, China
| | - Zhizhou Wang
- Department of Orthopedics, Putuo People's Hospital, Tongji University, Shanghai 200060, China
| | - Zhengran Ying
- Department of Orthopedics, Putuo People's Hospital, Tongji University, Shanghai 200060, China
| | - Hailong Zhang
- Department of Orthopedics, Putuo People's Hospital, Tongji University, Shanghai 200060, China.
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Zhang J, Sun J, Chen D, Kang J, Peng C, Chang X, Zhou H. Suppression of matrix degradation and amelioration of disc degeneration by a 970-nm diode laser via inhibition of the p38 MAPK pathway in a rabbit model. Lasers Med Sci 2023; 38:58. [PMID: 36717466 DOI: 10.1007/s10103-023-03717-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 01/16/2023] [Indexed: 02/01/2023]
Abstract
Intervertebral disc degeneration (IVDD) mainly manifests as an imbalance between the synthesis and degradation of cellular and extracellular matrix (ECM) components. The cytokine interleukin (IL)-1β-induced inflammatory response of intervertebral discs causes ECM degradation. The aim of this study was to investigate the effects of a 970-nm diode laser therapy (DLT) on inflammatory cytokine IL-1β and ECM degradation proteinases in nucleus pulposus (NP) tissues in a puncture-induced rabbit IVDD model. Thirty-six New Zealand white rabbits were randomly divided into six groups: the normal group, IVDD group, laser group, sham laser group, IVDD + anisomycin (p38MAPK signaling pathway agonist), and laser + anisomycin group. Effects of laser on IVDD progression were detected using radiographic and magnetic resonance imaging. Hematoxylin and eosin, Alcian blue, safranin O-fast green staining, western blotting, and immunohistochemistry staining were performed for the histological analysis and molecular mechanism underlying protection against puncture-induced matrix degradation in NP tissues by DLT. DLT reduced the degree of disc degeneration in the gross anatomy of the disc and increased the T2-weighted signal intensity of NP. Inflammatory cytokine IL-1β levels in the disc were significantly reduced after DLT suppressed the matrix-degrading proteinases MMP13 and ADAMTS-5 and upregulated the protein expression of collagen II and aggrecan. Moreover, it inhibited the p38MAPK signaling pathway in NP tissues in a puncture-induced rabbit IVDD model. DLT reduced puncture-induced overexpression of inflammatory cytokines, mainly IL-1β, thus inhibiting matrix degeneration of NP tissues and ameliorating IVDD. This may be related to inhibition of the p38 MAPK signaling pathway.
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Affiliation(s)
- Jingyue Zhang
- Department of Pain Management, the Fourth Affiliated Hospital of Harbin Medical University, No.37, Yiyuan Street, Nangang District, Harbin, Heilongjiang Province, 150001, China
- Department of Pain Management, the First Affiliated Hospital of Harbin Medical University, No.25 Post Office Street, Nangang District, Harbin, Heilongjiang Province, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Juan Sun
- Department of Pain Management, the Fourth Affiliated Hospital of Harbin Medical University, No.37, Yiyuan Street, Nangang District, Harbin, Heilongjiang Province, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
- Department of Anesthesiology, Chongqing Public Health Medical Center, Chongqing, 400036, China
| | - Dezhi Chen
- Department of Pain Management, the Fourth Affiliated Hospital of Harbin Medical University, No.37, Yiyuan Street, Nangang District, Harbin, Heilongjiang Province, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Jiyu Kang
- Department of Pain Management, the Fourth Affiliated Hospital of Harbin Medical University, No.37, Yiyuan Street, Nangang District, Harbin, Heilongjiang Province, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Chuan Peng
- Department of Pain Management, the Fourth Affiliated Hospital of Harbin Medical University, No.37, Yiyuan Street, Nangang District, Harbin, Heilongjiang Province, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Xiaotao Chang
- Department of Pain Management, the Fourth Affiliated Hospital of Harbin Medical University, No.37, Yiyuan Street, Nangang District, Harbin, Heilongjiang Province, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Huacheng Zhou
- Department of Pain Management, the Fourth Affiliated Hospital of Harbin Medical University, No.37, Yiyuan Street, Nangang District, Harbin, Heilongjiang Province, 150001, China.
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China.
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Lu R, Xu H, Deng X, Wang Y, He Z, Xu S, Liang S, Huang X, You H, Guo F, Cheng P, Chen AM. Physalin A alleviates intervertebral disc degeneration via anti-inflammatory and anti-fibrotic effects. J Orthop Translat 2023; 39:74-87. [PMID: 36788965 PMCID: PMC9898579 DOI: 10.1016/j.jot.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/21/2022] [Accepted: 01/05/2023] [Indexed: 01/27/2023] Open
Abstract
Background The incidence of intervertebral disc degeneration (IVDD) is a common degenerative disease with inflammation, decreased autophagy, and progression of fibrosis as its possible pathogenesis. Physalin A (PA) is a widely studied anti-inflammatory drug. However, its therapeutic effects on IVDD remain unexplored. Therefore, we aimed to explore the therapeutic potential of PA in IVDD progression. Materials and methods In vivo, we investigated PA bioactivity using a puncture-induced IVDD rat model. IVDD signals and height changes were detected using X-ray, micro-CT, and MRI, and structural and molecular lesions using histological staining and immunohistochemistry of intervertebral disc sections. In vivo, interleukin-1 beta (IL-1β) and TGF-β1 were employed to establish inflammation fibrotic nucleus pulposus (NP) cells. The PA effect duration, concentration, influence pathways, and pathological changes in IVDD treatment were elucidated using western blotting, real-time PCR, and immunofluorescence. Results PA exerted significant effects on IVDD remission due to anti-inflammation, fibrosis reduction, and autophagy enhancement. In vitro, PA improved inflammation by blocking the NF-κB and MAPK pathways, whereas it promoted autophagy via the PI3K/AKT/mTOR pathway and affected fibrotic progression by regulating the SMAD2/3 pathway. Moreover, PA improved the disc degeneration process in IVDD model. Conclusions PA exhibited significant anti-inflammatory and anti-fibrotic effects and improved autophagy in vivo and in vitro IVDD models, thus effectively relieving IVDD progression, indicating it is a promising agent for IVDD treatment. The translational potential of this article This study successfully reveals that PA, a natural bioactive withanolide, effectively relieved IVDD progression via inflammation inhibition, fibrosis reduction, and autophagy enhancement, indicating it is a promising agent for IVDD treatment.
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Affiliation(s)
- Rui Lu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Haoran Xu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xiaofeng Deng
- Department of Rehabilitation, Tongji Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, 430030, China
| | - Yingguang Wang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhiyi He
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Shimeng Xu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Shuang Liang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xiaojian Huang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hongbo You
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Fengjing Guo
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Peng Cheng
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China,Corresponding author. Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei Province, China.
| | - An-min Chen
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China,Corresponding author. Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei Province, China.
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EIF4A3-Induced Upregulation of hsa_circ_0040039 is a Biomarker and Aggravates IL-1β-Stimulated Intervertebral Disc Degeneration. Appl Biochem Biotechnol 2023:10.1007/s12010-023-04334-y. [PMID: 36689155 DOI: 10.1007/s12010-023-04334-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/10/2023] [Indexed: 01/24/2023]
Abstract
Intervertebral disc degeneration (IDD) is characterised by nucleus pulposus (NP) loss and extracellular matrix (ECM) degeneration. Circular RNAs (circRNAs) have been reported to be dysregulated during IDD progression. Recently, reports showed that hsa_circ_0040039 was increased in degenerated lumbar disc samples. The aim of this study was to explore the specific role and underlying mechanisms of hsa_circ_0040039 in IDD. The expression of hsa_circ_0040039 was investigated in NP tissues of IDD patients. IL-1β was used to treat NP cells to construct an IDD in vitro model. Overexpression and loss-of-function assays and bioinformatic analysis were performed to evaluate the role and potential mechanism of hsa_circ_0040039 during IDD progression. Hsa_circ_0040039 expression was increased about 2 folds in NP tissues compared with normal tissues and IL-1β-stimulated NP cells also presented hsa_circ_0040039 upregulation, and its overexpression promoted cell proliferation and ECM degeneration. The depletion of hsa_circ_0040039 had the opposite effects. Based on bioinformatics prediction, Luciferase assay, PCR and Western blot, our study verified that hsa_circ_0040039 directly bond to miR-146b-3p, then mediated its targeted MMP2 and PCNA. Moreover, the overexpression of miR-146b-3p and the silence of MMP2 or PCNA, partially abolished the effect of hsa_circ_0040039 on IL-1β-stimulated NPs. Hsa_circ_0040039 may participate in IDD development by mediating the repair and regeneration of NPs through upregulation MMP2 and PCNA mediated by miR-146b-3p.
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Role of Pyroptosis in Intervertebral Disc Degeneration and Its Therapeutic Implications. Biomolecules 2022; 12:biom12121804. [PMID: 36551232 PMCID: PMC9775394 DOI: 10.3390/biom12121804] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/27/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022] Open
Abstract
Intervertebral disc degeneration (IDD), a progressive and multifactorial pathological process, is predominantly associated with low back pain and permanent disability. Pyroptosis is a type of lytic programmed cell death triggered by the activation of inflammasomes and caspases. Unlike apoptosis, pyroptosis is characterized by the rupture of the plasma membrane and the release of inflammatory mediators, accelerating the destruction of the extracellular matrix (ECM). Recent studies have shown that pyrin domain-containing 3 (NLRP3) inflammasome-mediated pyroptosis in nucleus pulposus (NP) cells is activated in the progression of IDD. Furthermore, targeting pyroptosis in IDD demonstrates the excellent capacity of ECM remodeling and its anti-inflammatory properties, suggesting that pyroptosis is involved in the IDD process. In this review, we briefly summarize the molecular mechanism of pyroptosis and the pathogenesis of IDD. We also focus on the role of pyroptosis in the pathological progress of IDD and its targeted therapeutic application.
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Eckersley A, Ozols M, Chen P, Tam V, Ward LJ, Hoyland JA, Trafford A, Yuan XM, Schiller HB, Chan D, Sherratt MJ. Peptide location fingerprinting identifies species- and tissue-conserved structural remodelling of proteins as a consequence of ageing and disease. Matrix Biol 2022; 114:108-137. [PMID: 35618217 DOI: 10.1016/j.matbio.2022.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/12/2022] [Accepted: 05/19/2022] [Indexed: 12/30/2022]
Abstract
Extracellular matrices (ECMs) in the intervertebral disc (IVD), lung and artery are thought to undergo age-dependant accumulation of damage by chronic exposure to mechanisms such as reactive oxygen species, proteases and glycation. It is unknown whether this damage accumulation is species-dependant (via differing lifespans and hence cumulative exposures) or whether it can influence the progression of age-related diseases such as atherosclerosis. Peptide location fingerprinting (PLF) is a new proteomic analysis method, capable of the non-targeted identification of structure-associated changes within proteins. Here we applied PLF to publicly available ageing human IVD (outer annulus fibrosus), ageing mouse lung and human arterial atherosclerosis datasets and bioinformatically identified novel target proteins alongside common age-associated differences within protein structures which were conserved between three ECM-rich organs, two species, three IVD tissue regions, sexes and in an age-related disease. We identify peptide yield differences across protein structures which coincide with biological regions, potentially reflecting the functional consequences of ageing or atherosclerosis for macromolecular assemblies (collagen VI), enzyme/inhibitor activity (alpha-2 macroglobulin), activation states (complement C3) and interaction states (laminins, perlecan, fibronectin, filamin-A, collagen XIV and apolipoprotein-B). Furthermore, we show that alpha-2 macroglobulin and collagen XIV exhibit possible shared structural consequences in IVD ageing and arterial atherosclerosis, providing novel links between an age-related disease and intrinsic ageing. Crucially, we also demonstrate that fibronectin, laminin beta chains and filamin-A all exhibit conserved age-associated structural differences between mouse lung and human IVD, providing evidence that ECM, and their associating proteins, may be subjected to potentially similar mechanisms or consequences of ageing across both species, irrespective of differences in lifespan and tissue function.
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Affiliation(s)
- Alexander Eckersley
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.
| | - Matiss Ozols
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; Department of Human Genetics, Wellcome Sanger Institute, Genome Campus, Hinxton, United Kingdom; British Heart Foundation Centre of Research Excellence, University of Cambridge, Cambridge, United Kingdom
| | - Peikai Chen
- Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital (HKU-SZH), Shenzhen, Guangdong 518053, China
| | - Vivian Tam
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China
| | - Liam J Ward
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden; Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden
| | - Judith A Hoyland
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Andrew Trafford
- Division of Cardiovascular Sciences, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Xi-Ming Yuan
- Occupational and Environmental Medicine, Division of Prevention, Rehabilitation and Community Medicine, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Herbert B Schiller
- Institute of Lung Health and Immunity and Comprehensive Pneumology Center, Helmholtz Munich, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Danny Chan
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China
| | - Michael J Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.
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Bai X, Jiang M, Wang J, Yang S, Liu Z, Zhang H, Zhu X. Cyanidin attenuates the apoptosis of rat nucleus pulposus cells and the degeneration of intervertebral disc via the JAK2/STAT3 signal pathway in vitro and in vivo. PHARMACEUTICAL BIOLOGY 2022; 60:427-436. [PMID: 35175176 PMCID: PMC8856032 DOI: 10.1080/13880209.2022.2035773] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
CONTEXT Cyanidin has been shown to have therapeutic potential in osteoarthritis. However, it is unclear whether cyanidin prevents the progression of intervertebral disc degeneration (IVDD). OBJECTIVE This study evaluates the effects of cyanidin on IVDD in vitro and in vivo. MATERIALS AND METHODS Nucleus pulposus cells (NPCs) isolated from lumbar IVD of 4-week-old male Sprague-Dawley (SD) rats were exposed to 20 ng/mL IL-1β, and then treated with different doses (0-120 µM) of cyanidin for 24 h. SD rats were classified into three groups (n = 8) and treated as follows: control (normal saline), IVDD (vehicle), IVDD + cyanidin (50 mg/kg). Cyanidin was administered intraperitoneally for 8 weeks. RESULTS The IC50 of cyanidin for NPCs was 94.78 µM, and cyanidin had no toxicity at concentrations up to 500 mg/kg in SD rats. Cyanidin inhibited the apoptosis of NPCs induced by IL-1β (12.73 ± 0.61% vs. 18.54 ± 0.60%), promoted collagen II (0.82-fold) and aggrecan (0.81-fold) expression, while reducing MMP-13 (1.02-fold) and ADAMTS-5 (1.40-fold) expression. Cyanidin increased the formation of autophagosomes in IL-1β-induced NPCs, and promoted LC3II/LC3I (0.83-fold) and beclin-1 (0.85-fold) expression, which could be reversed by chloroquine. Cyanidin inhibited the phosphorylation of JAK2 (0.47-fold) and STAT3 (0.53-fold) in IL-1β-induced NPCs. The effects of cyanidin could be enhanced by AG490. Furthermore, cyanidin mitigated disc degeneration in IVDD rats in vivo. DISCUSSION AND CONCLUSIONS Cyanidin improved the function of NPCs in IVDD by regulating the JAK2/STAT3 pathway, which may provide a novel alternative strategy for IVDD. The mechanism of cyanidin improving IVDD still needs further work for in-depth investigation.
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Affiliation(s)
- Xiaoliang Bai
- Department of Orthopaedics, Baoding NO.1 Central Hospital, Baoding, China
- Department of Spine, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Meichao Jiang
- Department of Orthopaedics, Baoding NO.1 Central Hospital, Baoding, China
| | - Jie Wang
- Department of Orthopaedics, Baoding NO.1 Central Hospital, Baoding, China
| | - Shuai Yang
- Department of Orthopaedics, Baoding NO.1 Central Hospital, Baoding, China
- Department of Spine, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhiwei Liu
- Department of Orthopaedics, Baoding NO.1 Central Hospital, Baoding, China
| | - Hongxin Zhang
- Department of Orthopaedics, Baoding NO.1 Central Hospital, Baoding, China
| | - Xiaojuan Zhu
- Department of Geratology, Baoding NO.1 Central Hospital, Baoding, China
- CONTACT Xiaojuan Zhu Department of Geratology, Baoding NO.1 Central Hospital, No.320 Great Wall North Street, Baoding, 071000, China
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He S, Zhou X, Yang G, Zhou Z, Zhang Y, Shao X, Liang T, Lv N, Chen J, Qian Z. Proteomic comparison between physiological degeneration and needle puncture model of disc generation disease. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2022; 31:2920-2934. [PMID: 35842490 DOI: 10.1007/s00586-022-07284-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 04/20/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The completeness of the intervertebral disc proteome is fundamental to the integrity and functionality of the intervertebral disc. METHODS The 20 experimental rats were placed into two groups randomly, normal group (NG) and acupuncture pathological degeneration group-2 weeks (APDG-2w). The ten 24-month-old rats were grouped into physiological degeneration group (PDG). Magnetic resonance imaging, X-ray examination, histological staining (hematoxylin & eosin, safranin-O cartilage, and alcian blue staining), and immunohistochemical examination were carried out for assessing the degree of disc degradation. Intervertebral disc was collected, and protein composition was determined by LC- MS, followed by bioinformatic analysis including significance analysis, subcellular localization prediction, protein domain prediction, GO function and KEGG pathway analysis, and protein interaction network construction. LC-PRM was done for protein quantification. RESULTS Physiological degeneration and especially needle puncture decreased T2 signal intensity and intervertebral disc height. Results from hematoxylin & eosin, safranin-O, and alcian blue staining revealed that the annulus fibrosus apparently showed the wavy and collapsed fibrocartilage lamellas in APDG-2w and PDG groups. The contents of the nucleus pulposus were decreased in physiological degeneration group and APDG-2w group compared with NG. Results from immunohistochemical analysis suggested the degeneration of intervertebral disc and inflammation in APDG-2w and PDG groups. The protein composition and expression between needle puncture rat models and the physiological degeneration group showed significant difference. CONCLUSIONS Our studies produced point-reference datasets of normal rats, physiological degeneration rats, and needle puncture rat models, which is beneficial to subsequent pathological studies. There is differential expression of protein expression in degenerative discs with aging and acupuncture, which may be used as a potential discriminating index for different intervertebral degenerations.
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Affiliation(s)
- Shuangjun He
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Xinmin Road 2, Danyang, Zhenjiang, 212300, Jiangsu, China
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Xinfeng Zhou
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Guotao Yang
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Xinmin Road 2, Danyang, Zhenjiang, 212300, Jiangsu, China
| | - Zhangzhe Zhou
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Yijian Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Xiaofeng Shao
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Ting Liang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Nanning Lv
- Department of Orthopedic Surgery, The Second People's Hospital of Lianyungang, 41 Hailian Street, Lianyungang, Jiangsu, China.
| | - Jianhong Chen
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Xinmin Road 2, Danyang, Zhenjiang, 212300, Jiangsu, China.
| | - Zhonglai Qian
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.
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Degenerative Disc Disease of the Spine: From Anatomy to Pathophysiology and Radiological Appearance, with Morphological and Functional Considerations. J Pers Med 2022; 12:jpm12111810. [PMID: 36579533 PMCID: PMC9698646 DOI: 10.3390/jpm12111810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/28/2022] [Accepted: 10/30/2022] [Indexed: 11/06/2022] Open
Abstract
Degenerative disc disease is a common manifestation in routine imaging of the spine; this finding is partly attributable to physiological aging and partly to a pathological condition, and sometimes this distinction is simply not clear. In this review, we start focusing on disc anatomy and pathophysiology and try to correlate them with radiological aspects. Furthermore, there is a special focus on degenerative disc disease terminology, and, finally, some considerations regarding disc morphology and its specific function, as well as the way in which these aspects change in degenerative disease. Radiologists, clinicians and spine surgeons should be familiar with these aspects since they have an impact on everyday clinical practice.
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Sun K, Jiang J, Wang Y, Sun X, Zhu J, Xu X, Sun J, Shi J. The role of nerve fibers and their neurotransmitters in regulating intervertebral disc degeneration. Ageing Res Rev 2022; 81:101733. [PMID: 36113765 DOI: 10.1016/j.arr.2022.101733] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/11/2022] [Accepted: 09/11/2022] [Indexed: 01/31/2023]
Abstract
Intervertebral disc degeneration (IVDD) has been the major contributor to chronic lower back pain (LBP). Abnormal apoptosis, senescence, and pyroptosis of IVD cells, extracellular matrix (ECM) degradation, and infiltration of immune cells are the major molecular alternations during IVDD. Changes at tissue level frequently occur at advanced IVD tissue. Ectopic ingrowth of nerves within inner annulus fibrosus (AF) and nucleus pulposus (NP) tissue has been considered as the primary cause for LBP. Innervation at IVD tissue mainly included sensory and sympathetic nerves, and many markers for these two types of nerves have been detected since 1940. In fact, in osteoarthritis (OA), beyond pain transmission, the direct regulation of neuropeptides on functions of chondrocytes have attracted researchers' great attention recently. Many physical and pathological similarities between joint and IVD have shed us the light on the neurogenic mechanism involved in IVDD. Here, an overview of the advances in the nervous system within IVD tissue will be performed, with a discussion on in the role of nerve fibers and their neurotransmitters in regulating IVDD. We hope this review can attract more research interest to address neuromodulation and IVDD itself, which will enhance our understanding of the contribution of neuromodulation to the structural changes within IVD tissue and inflammatory responses and will help identify novel therapeutic targets and enable the effective treatment of IVDD disease.
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Affiliation(s)
- Kaiqiang Sun
- Department of Orthopedic Surgery, Changzheng Hospital, Navy Medical University, No.415 Fengyang Road, Shanghai 200003, China; Department of Orthopedics, Naval Medical Center of PLA, China
| | - Jialin Jiang
- Department of Orthopedic Surgery, Changzheng Hospital, Navy Medical University, No.415 Fengyang Road, Shanghai 200003, China
| | - Yuan Wang
- Department of Orthopedic Surgery, Changzheng Hospital, Navy Medical University, No.415 Fengyang Road, Shanghai 200003, China
| | - Xiaofei Sun
- Department of Orthopedic Surgery, Changzheng Hospital, Navy Medical University, No.415 Fengyang Road, Shanghai 200003, China
| | - Jian Zhu
- Department of Orthopedic Surgery, Changzheng Hospital, Navy Medical University, No.415 Fengyang Road, Shanghai 200003, China
| | - Ximing Xu
- Department of Orthopedic Surgery, Changzheng Hospital, Navy Medical University, No.415 Fengyang Road, Shanghai 200003, China
| | - Jingchuan Sun
- Department of Orthopedic Surgery, Changzheng Hospital, Navy Medical University, No.415 Fengyang Road, Shanghai 200003, China.
| | - Jiangang Shi
- Department of Orthopedic Surgery, Changzheng Hospital, Navy Medical University, No.415 Fengyang Road, Shanghai 200003, China.
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Chen H, Zhou J, Zhang G, Luo Z, Li L, Kang X. Emerging role and therapeutic implication of mTOR signalling in intervertebral disc degeneration. Cell Prolif 2022; 56:e13338. [PMID: 36193577 PMCID: PMC9816935 DOI: 10.1111/cpr.13338] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/16/2022] [Accepted: 09/01/2022] [Indexed: 01/11/2023] Open
Abstract
Intervertebral disc degeneration (IDD), an important cause of chronic low back pain (LBP), is considered the pathological basis for various spinal degenerative diseases. A series of factors, including inflammatory response, oxidative stress, autophagy, abnormal mechanical stress, nutritional deficiency, and genetics, lead to reduced extracellular matrix (ECM) synthesis by intervertebral disc (IVD) cells and accelerate IDD progression. Mammalian target of rapamycin (mTOR) is an evolutionarily conserved serine/threonine kinase that plays a vital role in diverse degenerative diseases. Recent studies have shown that mTOR signalling is involved in the regulation of autophagy, oxidative stress, inflammatory responses, ECM homeostasis, cellular senescence, and apoptosis in IVD cells. Accordingly, we reviewed the mechanism of mTOR signalling in the pathogenesis of IDD to provide innovative ideas for future research and IDD treatment.
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Affiliation(s)
- Hai‐Wei Chen
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouGansuPeople's Republic of China,The Second Clinical Medical CollegeLanzhou UniversityLanzhouGansuPeople's Republic of China
| | - Jian‐Wei Zhou
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouGansuPeople's Republic of China,Key Laboratory of Orthopaedics Disease of Gansu ProvinceLanzhou University Second HospitalLanzhouGansu ProvincePeople's Republic of China
| | - Guang‐Zhi Zhang
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouGansuPeople's Republic of China,The Second Clinical Medical CollegeLanzhou UniversityLanzhouGansuPeople's Republic of China
| | - Zhang‐Bin Luo
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouGansuPeople's Republic of China,The Second Clinical Medical CollegeLanzhou UniversityLanzhouGansuPeople's Republic of China
| | - Lei Li
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouGansuPeople's Republic of China,The Second Clinical Medical CollegeLanzhou UniversityLanzhouGansuPeople's Republic of China
| | - Xue‐Wen Kang
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouGansuPeople's Republic of China,The Second Clinical Medical CollegeLanzhou UniversityLanzhouGansuPeople's Republic of China,Key Laboratory of Orthopaedics Disease of Gansu ProvinceLanzhou University Second HospitalLanzhouGansu ProvincePeople's Republic of China
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Whittal MC, Poynter SJ, Samms K, Briar KJ, Sinopoli SI, Millecamps M, Stone LS, DeWitte-Orr SJ, Gregory DE. TAK-242 treatment and its effect on mechanical properties and gene expression associated with IVD degeneration in SPARC-null mice. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2022; 31:2801-2811. [PMID: 35816198 DOI: 10.1007/s00586-022-07310-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 05/09/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
PURPOSE Intervertebral disc (IVD) degeneration is accompanied by mechanical and gene expression changes to IVDs. SPARC-null mice display accelerated IVD degeneration, and treatment with (toll-like receptor 4 (TLR4) inhibitor) TAK-242 decreases proinflammatory cytokines and pain. This study examined if chronic TAK-242 treatment impacts mechanical properties and gene expression associated with IVD degeneration in SPARC-null mice. METHODS Male and female SPARC-null and WT mice aged 7-9 months were given intraperitoneal injections with TAK-242 or an equivalent saline vehicle for 8 weeks (3x/per week, M-W-F). L2-L5 spinal segments were tested in cyclic axial tension and compression. Gene expression analysis (RT-qPCR) was performed on male IVD tissues using Qiagen RT2 PCR arrays. RESULTS SPARC-null mice had decreased NZ length (p = 0.001) and increased NZ stiffness (p < 0.001) compared to WT mice. NZ length was not impacted by TAK-242 treatment (p = 0.967) despite increased hysteresis energy (p = 0.024). Tensile stiffness was greater in SPARC-null mice (p = 0.018), and compressive (p < 0.001) stiffness was reduced from TAK-242 treatment in WT but not SPARC-null mice (p = 0.391). Gene expression analysis found upregulation of 13 ECM and 5 inflammatory genes in SPARC-null mice, and downregulation of 2 inflammatory genes after TAK-242 treatment. CONCLUSIONS TAK-242 had limited impacts on SPARC-null mechanical properties and did not attenuate NZ mechanical changes associated with IVD degeneration. Expression analysis revealed an increase in ECM and inflammatory gene expression in SPARCnull mice with a reduction in inflammatory expression due to TAK-242 treatment. This study provides insight into the role of TLR4 in SPARC-null mediated IVD degeneration.
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Affiliation(s)
- Mitchel C Whittal
- Department of Kinesiology and Physical Education, Wilfrid Laurier University, 75 University Ave W, Waterloo, ON, N2L 3C5, Canada
| | - Sarah J Poynter
- Department of Health Sciences, Wilfrid Laurier University, 75 University Ave W, Waterloo, ON, N2L 3C5, Canada
| | - Kayla Samms
- Department of Health Sciences, Wilfrid Laurier University, 75 University Ave W, Waterloo, ON, N2L 3C5, Canada
| | - K Josh Briar
- Department of Kinesiology and Physical Education, Wilfrid Laurier University, 75 University Ave W, Waterloo, ON, N2L 3C5, Canada
| | - Sabrina I Sinopoli
- Department of Kinesiology and Physical Education, Wilfrid Laurier University, 75 University Ave W, Waterloo, ON, N2L 3C5, Canada
| | - Magali Millecamps
- McGill University, 845 Sherbrooke Street West, Montréal, QC, H3A 0G4, Canada
| | - Laura S Stone
- McGill University, 845 Sherbrooke Street West, Montréal, QC, H3A 0G4, Canada
- University of Minnesota, 321 Church Street SE, Minneapolis, MN, 55455, USA
| | - Stephanie J DeWitte-Orr
- Department of Health Sciences, Wilfrid Laurier University, 75 University Ave W, Waterloo, ON, N2L 3C5, Canada
| | - Diane E Gregory
- Department of Kinesiology and Physical Education, Wilfrid Laurier University, 75 University Ave W, Waterloo, ON, N2L 3C5, Canada.
- Department of Health Sciences, Wilfrid Laurier University, 75 University Ave W, Waterloo, ON, N2L 3C5, Canada.
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Bahar ME, Hwang JS, Ahmed M, Lai TH, Pham TM, Elashkar O, Akter KM, Kim DH, Yang J, Kim DR. Targeting Autophagy for Developing New Therapeutic Strategy in Intervertebral Disc Degeneration. Antioxidants (Basel) 2022; 11:antiox11081571. [PMID: 36009290 PMCID: PMC9405341 DOI: 10.3390/antiox11081571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/11/2022] [Accepted: 08/11/2022] [Indexed: 12/25/2022] Open
Abstract
Intervertebral disc degeneration (IVDD) is a prevalent cause of low back pain. IVDD is characterized by abnormal expression of extracellular matrix components such as collagen and aggrecan. In addition, it results in dysfunctional growth, senescence, and death of intervertebral cells. The biological pathways involved in the development and progression of IVDD are not fully understood. Therefore, a better understanding of the molecular mechanisms underlying IVDD could aid in the development of strategies for prevention and treatment. Autophagy is a cellular process that removes damaged proteins and dysfunctional organelles, and its dysfunction is linked to a variety of diseases, including IVDD and osteoarthritis. In this review, we describe recent research findings on the role of autophagy in IVDD pathogenesis and highlight autophagy-targeting molecules which can be exploited to treat IVDD. Many studies exhibit that autophagy protects against and postpones disc degeneration. Further research is needed to determine whether autophagy is required for cell integrity in intervertebral discs and to establish autophagy as a viable therapeutic target for IVDD.
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Affiliation(s)
- Md Entaz Bahar
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Jin Seok Hwang
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Mahmoud Ahmed
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Trang Huyen Lai
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Trang Minh Pham
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Omar Elashkar
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Kazi-Marjahan Akter
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, GyeongNam, Korea
| | - Dong-Hee Kim
- Department of Orthopaedic Surgery, Institute of Health Sciences, Gyeongsang National University Hospital and Gyeongsang National University College of Medicine, Jinju 52727, GyeongNam, Korea
| | - Jinsung Yang
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Deok Ryong Kim
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
- Correspondence: ; Tel.: +82-55-772-8054
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Current Perspectives on Nucleus Pulposus Fibrosis in Disc Degeneration and Repair. Int J Mol Sci 2022; 23:ijms23126612. [PMID: 35743056 PMCID: PMC9223673 DOI: 10.3390/ijms23126612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 11/17/2022] Open
Abstract
A growing body of evidence in humans and animal models indicates an association between intervertebral disc degeneration (IDD) and increased fibrotic elements in the nucleus pulposus (NP). These include enhanced matrix turnover along with the abnormal deposition of collagens and other fibrous matrices, the emergence of fibrosis effector cells, such as macrophages and active fibroblasts, and the upregulation of the fibroinflammatory factors TGF-β1 and IL-1/-13. Studies have suggested a role for NP cells in fibroblastic differentiation through the TGF-βR1-Smad2/3 pathway, inflammatory activation and mechanosensing machineries. Moreover, NP fibrosis is linked to abnormal MMP activity, consistent with the role of matrix proteases in regulating tissue fibrosis. MMP-2 and MMP-12 are the two main profibrogenic markers of myofibroblastic NP cells. This review revisits studies in the literature relevant to NP fibrosis in an attempt to stratify its biochemical features and the molecular identity of fibroblastic cells in the context of IDD. Given the role of fibrosis in tissue healing and diseases, the perspective may provide new insights into the pathomechanism of IDD and its management.
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50
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Penolazzi L, Lambertini E, D'Agostino S, Pozzobon M, Notarangelo MP, Greco P, De Bonis P, Nastruzzi C, Piva R. Decellularized extracellular matrix-based scaffold and hypoxic priming: A promising combination to improve the phenotype of degenerate intervertebral disc cells. Life Sci 2022; 301:120623. [DOI: 10.1016/j.lfs.2022.120623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/27/2022] [Accepted: 05/05/2022] [Indexed: 10/18/2022]
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